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Ahmad Azmi Azrem - One of the best experts on this subject based on the ideXlab platform.

  • The Effects of Tensile and Morphological Properties of Styrene Butadiene Rubber/recycled Chloroprene Rubber (SBR/CRr) Blends.
    2016
    Co-Authors: Ahmad Azmi Azrem, N. Z. Noriman, M.n. Razif, Mohd Salleh M. A. A
    Abstract:

    Abstract. The effects of tensile and morphological properties of styrene butadiene Rubber/virgin Chloroprene Rubber blends (SBR/CRv) and styrene butadiene Rubber/recycled Chloroprene Rubber blends (SBR/CRr) were investigated. The range size of CRr used in this study was 0.3 – 0.7 mm. Both SBR/CRv blends and SBR/CRr blends were prepared using two roll mill at room temperature with blend ratios 95/5, 85/15, 75/25, 65/35 and 50/50. It can be observed that, the tensile strength and elongation at break of SBR/CRr blends show higher value than SBR/CRv blends particularly up to 15 phr of CRr in the blends. However, SBR/CRr blends shows higher value of tensile modulus (M100) than SBR/CRv blends at all blend ratios. The scanning electron microscopy (SEM) of tensile fracture surface of SBR/CRr blends at 50 blend ratios illustrated a better adhesion and dispersion in comparison with SBR/CRv blends

  • Physical and Morphological Properties of Styrene Butadiene Rubber / Recycled Chloroprene Rubber (SBR/CRr) Blends
    Advanced Materials Research, 2013
    Co-Authors: Ahmad Azmi Azrem, N. Z. Noriman, M.n. Razif, Sung Ting Sam, M.s. Saiful Nizwan
    Abstract:

    The effects of physical and morphological properties of styrene butadiene Rubber/virgin Chloroprene Rubber blends (SBR/CRv) and styrene butadiene Rubber/recycled Chloroprene Rubber blends (SBR/CRr) were investigated. Both SBR/CRv blends and SBR/CRr blends were prepared using two roll mill at room temperature with blend ratios 95/5, 85/15, 75/25, 65/35 and 50/50. The range size of CRr used in this study was 0.3 0.7 mm. The SBR/CRr blends shows higher value of hardness and crosslink density compared to SBR/CRv blends at all blend ratios. The scanning electron microscopy (SEM) of tensile fracture surface of SBR/CRr blends at 15 blend ratio illustrated a better adhesion and dispersion of CRr with SBR matrix compared with SBR/CRv blends.

  • The Effects of Tensile and Morphological Properties of Styrene Butadiene Rubber/Recycled Chloroprene Rubber (SBR/CRr) Blends
    Advanced Materials Research, 2012
    Co-Authors: Ahmad Azmi Azrem, N. Z. Noriman, M.n. Razif, Mohd Arif Anuar Mohd Salleh
    Abstract:

    The effects of tensile and morphological properties of styrene butadiene Rubber/virgin Chloroprene Rubber blends (SBR/CRv) and styrene butadiene Rubber/recycled Chloroprene Rubber blends (SBR/CRr) were investigated. The range size of CRr used in this study was 0.3 0.7 mm. Both SBR/CRv blends and SBR/CRr blends were prepared using two roll mill at room temperature with blend ratios 95/5, 85/15, 75/25, 65/35 and 50/50. It can be observed that, the tensile strength and elongation at break of SBR/CRr blends show higher value than SBR/CRv blends particularly up to 15 phr of CRr in the blends. However, SBR/CRr blends shows higher value of tensile modulus (M100) than SBR/CRv blends at all blend ratios. The scanning electron microscopy (SEM) of tensile fracture surface of SBR/CRr blends at 50 blend ratios illustrated a better adhesion and dispersion in comparison with SBR/CRv blends. Keywords: Chloroprene Rubber, recycled Chloroprene Rubber, styrene butadiene Rubber, tensile properties, SEM

H Ismail - One of the best experts on this subject based on the ideXlab platform.

  • Properties of natural Rubber latex-compatibilized natural Rubber/recycled Chloroprene Rubber blends
    Journal of Elastomers and Plastics, 2016
    Co-Authors: Siti Zuliana Salleh, H Ismail, Zainal Ariffin Ahmad
    Abstract:

    The effect of natural Rubber latex (NRL) on the properties of natural Rubber/recycled Chloroprene Rubber (NR/rCR) blends was investigated. The properties of NR/rCR-NRL blends were compared with those of NR/rCR blends without the NRL. The addition of NRL showed an improvement in tensile strength, elongation at break, fatigue life, and swelling resistance with respect to those Rubber blends without NRL. However, the gel content and glass transition of NR/rCR blends were not significantly affected by NRL. The scanning electron microscopic images showed better rCR dispersion in NR/rCR-NRL blends, indicating that the interfacial adhesion between NR and rCR blends was enhanced. A single tan δ is observed from the dynamic mechanical analysis supported that NRL can be used as compatibilizer in the NR-rich blend.

  • Properties of Natural Rubber/Recycled Chloroprene Rubber Blend: Effects of Blend Ratio and Matrix
    Procedia Chemistry, 2016
    Co-Authors: S Z Salleh, M Z Ahmad, H Ismail
    Abstract:

    Abstract The present study investigated the effects of two types of natural Rubber and different blend ratios on the cure, tensile properties and morphology of natural Rubber/recycled Chloroprene Rubber blends. The blends of natural Rubber/recycled Chloroprene Rubber were prepared by using laboratory two-roll mill. The result showed that the cure time prolonged with the addition of recycled Chloroprene Rubber (rCR). Comparability, natural Rubber/recycled Chloroprene Rubber (SMR L/rCR) blendcured rapidly than epoxidized natural Rubber/recycled Chloroprene Rubber (ENR 50/rCR) blend. The addition of rCRalso caused a decrement in the tensile strength and elongation at break for both Rubber blends. The SMR L/rCR blendsshowed higher tensile strength and elongation at break compared to those of ENR 50/rCR blends at any blend ratios.

  • properties of natural Rubber recycled Chloroprene Rubber blend effects of blend ratio and matrix
    Procedia Chemistry, 2016
    Co-Authors: S Z Salleh, M Z Ahmad, H Ismail
    Abstract:

    Abstract The present study investigated the effects of two types of natural Rubber and different blend ratios on the cure, tensile properties and morphology of natural Rubber/recycled Chloroprene Rubber blends. The blends of natural Rubber/recycled Chloroprene Rubber were prepared by using laboratory two-roll mill. The result showed that the cure time prolonged with the addition of recycled Chloroprene Rubber (rCR). Comparability, natural Rubber/recycled Chloroprene Rubber (SMR L/rCR) blendcured rapidly than epoxidized natural Rubber/recycled Chloroprene Rubber (ENR 50/rCR) blend. The addition of rCRalso caused a decrement in the tensile strength and elongation at break for both Rubber blends. The SMR L/rCR blendsshowed higher tensile strength and elongation at break compared to those of ENR 50/rCR blends at any blend ratios.

  • Curing characteristics and mechanical properties of natural Rubber/Chloroprene Rubber and epoxidized natural Rubber/Chloroprene Rubber blends
    Polymer Testing, 2001
    Co-Authors: H Ismail, H.c. Leong
    Abstract:

    Curing characteristics and Mechanical properties of natural Rubber (NR)/Chloroprene Rubber (CR) and epoxidized natural Rubber (ENR)/CR blends were studied. ENR 50, SMR L and CR were used as the elastomers. The composition of SMR L and ENR 50 was varied from 0 to 100% Rubber. Results show that the Mooney scorch time, t5 and cure index, ΔtL deviate negatively from the calculated value based on the interpolation between the properties of the two component elastomers. The negative deviation was attributed to the induction effect of ENR 50 and SMR L on CR molecules that causes an overall increase in the rate of crosslinking of the blend. However, for tensile modulus, hardness and tensile strength, a positive deviation was observed. The maximum value of tensile modulus and hardness was obtained at 25/75 (wt/wt) of ENR 50/CR and SMR L/CR blends whereas for tensile strength at 75/25 (wt/wt) of ENR 50/CR and SMR L/CR blends.

  • curing characteristics and mechanical properties of natural Rubber Chloroprene Rubber and epoxidized natural Rubber Chloroprene Rubber blends
    Polymer Testing, 2001
    Co-Authors: H Ismail, H.c. Leong
    Abstract:

    Abstract Curing characteristics and Mechanical properties of natural Rubber (NR)/Chloroprene Rubber (CR) and epoxidized natural Rubber (ENR)/CR blends were studied. ENR 50, SMR L and CR were used as the elastomers. The composition of SMR L and ENR 50 was varied from 0 to 100% Rubber. Results show that the Mooney scorch time, t5 and cure index, ΔtL deviate negatively from the calculated value based on the interpolation between the properties of the two component elastomers. The negative deviation was attributed to the induction effect of ENR 50 and SMR L on CR molecules that causes an overall increase in the rate of crosslinking of the blend. However, for tensile modulus, hardness and tensile strength, a positive deviation was observed. The maximum value of tensile modulus and hardness was obtained at 25/75 (wt/wt) of ENR 50/CR and SMR L/CR blends whereas for tensile strength at 75/25 (wt/wt) of ENR 50/CR and SMR L/CR blends.

N. Z. Noriman - One of the best experts on this subject based on the ideXlab platform.

  • Recycled Natural Rubber Latex Gloves Filled Chloroprene Rubber: Effects of Compatibilizers
    Journal of Physics: Conference Series, 2018
    Co-Authors: A. M. Alakrach, N. Z. Noriman, R. Hamzah, Omar S. Dahham, Z. Shayfull, Syed Zulkarnain Syed Idrus, Suhizaz Sudin
    Abstract:

    In this study, the effects of the compatibilizers; trans-polyoctylene (TOR) and epoxidized natural Rubber (ENR-50), on the cure characteristics and tensile properties of recycled natural Rubber latex gloves (rNR-G) filled Chloroprene Rubber (CR) were investigated. Blends consisting of rNR-G in a weight ratio 20 phr in CR and The compatibilizers TOR and ENR-50 at different concentrations, i.e. 2, 4, 6, 8 and 10 phr, were prepared using a two roll mill. Incorporation of TOR resulted in a reducing of the cure characteristics, meanwhile ENR-50 increased them. On the other hand, both of TOR and ENR-50 were improved tensile properties. These effects are attributed to the enhanced interfacial adhesion between rNR-G and phases through the compatibilizing effect induced by TOR and ENR-50, and the good dispersion of the rNR-G phase in the CR matrix. The results confirmed that TOR and ENR-50 could potentially be used as compatibilizers for the recycled natural Rubber latex gloves filled Chloroprene Rubber.

  • The Effects of Tensile and Morphological Properties of Styrene Butadiene Rubber/recycled Chloroprene Rubber (SBR/CRr) Blends.
    2016
    Co-Authors: Ahmad Azmi Azrem, N. Z. Noriman, M.n. Razif, Mohd Salleh M. A. A
    Abstract:

    Abstract. The effects of tensile and morphological properties of styrene butadiene Rubber/virgin Chloroprene Rubber blends (SBR/CRv) and styrene butadiene Rubber/recycled Chloroprene Rubber blends (SBR/CRr) were investigated. The range size of CRr used in this study was 0.3 – 0.7 mm. Both SBR/CRv blends and SBR/CRr blends were prepared using two roll mill at room temperature with blend ratios 95/5, 85/15, 75/25, 65/35 and 50/50. It can be observed that, the tensile strength and elongation at break of SBR/CRr blends show higher value than SBR/CRv blends particularly up to 15 phr of CRr in the blends. However, SBR/CRr blends shows higher value of tensile modulus (M100) than SBR/CRv blends at all blend ratios. The scanning electron microscopy (SEM) of tensile fracture surface of SBR/CRr blends at 50 blend ratios illustrated a better adhesion and dispersion in comparison with SBR/CRv blends

  • Physical and Morphological Properties of Styrene Butadiene Rubber / Recycled Chloroprene Rubber (SBR/CRr) Blends
    Advanced Materials Research, 2013
    Co-Authors: Ahmad Azmi Azrem, N. Z. Noriman, M.n. Razif, Sung Ting Sam, M.s. Saiful Nizwan
    Abstract:

    The effects of physical and morphological properties of styrene butadiene Rubber/virgin Chloroprene Rubber blends (SBR/CRv) and styrene butadiene Rubber/recycled Chloroprene Rubber blends (SBR/CRr) were investigated. Both SBR/CRv blends and SBR/CRr blends were prepared using two roll mill at room temperature with blend ratios 95/5, 85/15, 75/25, 65/35 and 50/50. The range size of CRr used in this study was 0.3 0.7 mm. The SBR/CRr blends shows higher value of hardness and crosslink density compared to SBR/CRv blends at all blend ratios. The scanning electron microscopy (SEM) of tensile fracture surface of SBR/CRr blends at 15 blend ratio illustrated a better adhesion and dispersion of CRr with SBR matrix compared with SBR/CRv blends.

  • The Effects of Tensile and Morphological Properties of Styrene Butadiene Rubber/Recycled Chloroprene Rubber (SBR/CRr) Blends
    Advanced Materials Research, 2012
    Co-Authors: Ahmad Azmi Azrem, N. Z. Noriman, M.n. Razif, Mohd Arif Anuar Mohd Salleh
    Abstract:

    The effects of tensile and morphological properties of styrene butadiene Rubber/virgin Chloroprene Rubber blends (SBR/CRv) and styrene butadiene Rubber/recycled Chloroprene Rubber blends (SBR/CRr) were investigated. The range size of CRr used in this study was 0.3 0.7 mm. Both SBR/CRv blends and SBR/CRr blends were prepared using two roll mill at room temperature with blend ratios 95/5, 85/15, 75/25, 65/35 and 50/50. It can be observed that, the tensile strength and elongation at break of SBR/CRr blends show higher value than SBR/CRv blends particularly up to 15 phr of CRr in the blends. However, SBR/CRr blends shows higher value of tensile modulus (M100) than SBR/CRv blends at all blend ratios. The scanning electron microscopy (SEM) of tensile fracture surface of SBR/CRr blends at 50 blend ratios illustrated a better adhesion and dispersion in comparison with SBR/CRv blends. Keywords: Chloroprene Rubber, recycled Chloroprene Rubber, styrene butadiene Rubber, tensile properties, SEM

Ming Qiu Zhang - One of the best experts on this subject based on the ideXlab platform.

  • self healing reshaping and recycling of vulcanized Chloroprene Rubber a case study of multitask cyclic utilization of cross linked polymer
    ACS Sustainable Chemistry & Engineering, 2016
    Co-Authors: Hong Ping Xiang, Min Zhi Rong, Ming Qiu Zhang
    Abstract:

    To develop a new technology for sustainable application of sulfur cross-linked Rubbers, a novel latent catalyst, organic complex copper(II) methacrylate (MA-Cu), is explored to trigger disulfide metathesis at elevated temperature. When it is incorporated into vulcanized Chloroprene Rubber fabricated following industrial recipe, reshuffling of inherent sulfur cross-links is enabled typically at 120 °C, while microstructure of the material remains unchanged at lower temperature (typically lower than 100 °C). Such a latent character of MA-Cu is believed to ensure operation stability of the Rubber under ambient conditions, and its organic nature helps to improve dispersion homogeneity. By taking advantage of the activated cross-linked networks, the sulfur bonds can be reversibly exchanged inside the vulcanized Chloroprene Rubber as well as across the surfaces at 120 °C. As a result, the Rubber is coupled with the capabilities of repeated reshaping, self-healing, and recycling without need of changing its macr...

  • Self-healing, Reshaping, and Recycling of Vulcanized Chloroprene Rubber: A Case Study of Multitask Cyclic Utilization of Cross-linked Polymer
    2016
    Co-Authors: Hong Ping Xiang, Min Zhi Rong, Ming Qiu Zhang
    Abstract:

    To develop a new technology for sustainable application of sulfur cross-linked Rubbers, a novel latent catalyst, organic complex copper­(II) methacrylate (MA-Cu), is explored to trigger disulfide metathesis at elevated temperature. When it is incorporated into vulcanized Chloroprene Rubber fabricated following industrial recipe, reshuffling of inherent sulfur cross-links is enabled typically at 120 °C, while microstructure of the material remains unchanged at lower temperature (typically lower than 100 °C). Such a latent character of MA-Cu is believed to ensure operation stability of the Rubber under ambient conditions, and its organic nature helps to improve dispersion homogeneity. By taking advantage of the activated cross-linked networks, the sulfur bonds can be reversibly exchanged inside the vulcanized Chloroprene Rubber as well as across the surfaces at 120 °C. As a result, the Rubber is coupled with the capabilities of repeated reshaping, self-healing, and recycling without need of changing its macromolecular structure and manufacturing parameters. These outcomes might lead to the development of energy saving and environmentally friendly all solid-state processing of cross-linked polymers toward multitask cyclic utilization

Mohd Arif Anuar Mohd Salleh - One of the best experts on this subject based on the ideXlab platform.

  • Effects of Cure Characteristics, Mechanical and Morphological Properties of Styrene Butadiene Rubber/Recycled Chloroprene Rubber (SBR/CRr) Blends
    Materiale Plastice, 2013
    Co-Authors: Ahmad Azrem Azmi, Mohd Arif Anuar Mohd Salleh, Nik Noriman Zulkepli, Muhammad Razif Nordin, Mohd Mustafa Al Bakri Abdullah, Ion Sandu, Ismail Hanafi
    Abstract:

    The effects of tensile and morphological properties of styrene butadiene Rubber/virgin Chloroprene Rubber blends (SBR/CRv) and styrene butadiene Rubber/recycled Chloroprene Rubber blends (SBR/CRr) were investigated. The range size of CRr used in this study was 0.3 - 0.7 mm. Both SBR/CRv blends and SBR/CRr blends were prepared using two roll mill at room temperature with blend ratios 95/5, 85/15, 75/25, 65/35 and 50/50. It can be observed that, cure characteristics of SBR/CRr blends have lower cure time, t 90 than SBR/ CRv blends.SBR/CRr blends showed higher scorch time, t 2 and minimum torque (ML) compared to SBR/CRv blends at all blend ratios compared with the SBR/CRv blends. However, maximum torque (MH) of SBR/CRr blends exhibit the opposite trend compared with the SBR/CRv blends. It can be observed that, the tensile strength and elongation at break of SBR/CRr blends show higher value than SBR/CRv blends particularly up to 15 phr of CRr in the blends. However, SBR/CRr blends shows higher value of tensile modulus (M100) than SBR/CRv blends at all blend ratios. The scanning electron microscopy (SEM) of tensile fracture surface of SBR/CRr blends at 50 blend ratios illustrated a better adhesion and dispersion in comparison with SBR/CRv blends.

  • The Effects of Tensile and Morphological Properties of Styrene Butadiene Rubber/Recycled Chloroprene Rubber (SBR/CRr) Blends
    Advanced Materials Research, 2012
    Co-Authors: Ahmad Azmi Azrem, N. Z. Noriman, M.n. Razif, Mohd Arif Anuar Mohd Salleh
    Abstract:

    The effects of tensile and morphological properties of styrene butadiene Rubber/virgin Chloroprene Rubber blends (SBR/CRv) and styrene butadiene Rubber/recycled Chloroprene Rubber blends (SBR/CRr) were investigated. The range size of CRr used in this study was 0.3 0.7 mm. Both SBR/CRv blends and SBR/CRr blends were prepared using two roll mill at room temperature with blend ratios 95/5, 85/15, 75/25, 65/35 and 50/50. It can be observed that, the tensile strength and elongation at break of SBR/CRr blends show higher value than SBR/CRv blends particularly up to 15 phr of CRr in the blends. However, SBR/CRr blends shows higher value of tensile modulus (M100) than SBR/CRv blends at all blend ratios. The scanning electron microscopy (SEM) of tensile fracture surface of SBR/CRr blends at 50 blend ratios illustrated a better adhesion and dispersion in comparison with SBR/CRv blends. Keywords: Chloroprene Rubber, recycled Chloroprene Rubber, styrene butadiene Rubber, tensile properties, SEM