The Experts below are selected from a list of 183 Experts worldwide ranked by ideXlab platform

Deepa K. Baby - One of the best experts on this subject based on the ideXlab platform.

  • toughening of epoxy thermoset with polystyrene block Polyglycolic Acid star copolymer nanostructure mechanical property correlation
    Industrial & Engineering Chemistry Research, 2014
    Co-Authors: Raju Francis, Deepa K. Baby
    Abstract:

    A novel amphiphilic polystyrene-block-Polyglycolic Acid three-arm star copolymer (PS-b-PGA)3 was incorporated in epoxy thermoset to show reaction-induced microphase separation. The diblock copolymer was prepared by atom-transfer radical polymerization followed by chain end modification, and toward the end ring-opening polymerization was utilized to attach the Polyglycolic Acid moiety. The formation of polystyrene-block-Polyglycolic Acid was confirmed by using Fourier transform infrared analysis, gel permeation chromatography, and 1H NMR. The microphase separation of block copolymer resulted in the formation of ordered nanodomains in the epoxy thermoset. It was found that the block copolymer in epoxy thermoset displayed reaction-induced microphase separation behavior as evidenced by transmission electron microscopy, scanning electron microscopy, and atomic force microscopy. The tensile strength and the toughness of the thermoset were increased by the incorporation of PGA, which has high glass transition an...

  • Toughening of Epoxy Thermoset with Polystyrene-block-Polyglycolic Acid Star Copolymer: Nanostructure–Mechanical Property Correlation
    Industrial & Engineering Chemistry Research, 2014
    Co-Authors: Raju Francis, Deepa K. Baby
    Abstract:

    A novel amphiphilic polystyrene-block-Polyglycolic Acid three-arm star copolymer (PS-b-PGA)3 was incorporated in epoxy thermoset to show reaction-induced microphase separation. The diblock copolymer was prepared by atom-transfer radical polymerization followed by chain end modification, and toward the end ring-opening polymerization was utilized to attach the Polyglycolic Acid moiety. The formation of polystyrene-block-Polyglycolic Acid was confirmed by using Fourier transform infrared analysis, gel permeation chromatography, and 1H NMR. The microphase separation of block copolymer resulted in the formation of ordered nanodomains in the epoxy thermoset. It was found that the block copolymer in epoxy thermoset displayed reaction-induced microphase separation behavior as evidenced by transmission electron microscopy, scanning electron microscopy, and atomic force microscopy. The tensile strength and the toughness of the thermoset were increased by the incorporation of PGA, which has high glass transition an...

Palle Jørn Sloth Osther - One of the best experts on this subject based on the ideXlab platform.

  • polyglyconate or Polyglycolic Acid suture in patients with suspected impaired wound healing
    Ugeskrift for Læger, 1997
    Co-Authors: Palle Jørn Sloth Osther, P Gjode, B B Mortensen, J.b. Andersen, P B Mortensen, Finn Gottrup
    Abstract:

    : A randomized study of abdominal fascial closure using interrupted polyglyconate and Polyglycolic Acid sutures after laparotomy was carried out in 204 consecutive patients with suspected impaired wound healing. There were no statistically significant differences between the two sutures with regard to development of fascial disruption and incisional hernia. Wound infection demanding surgical intervention was found in 7% of patients with polyglyconate sutures and in 16% of those with Polyglycolic Acid sutures (p = 0.04). Monofilament polyglyconate suture does not reduce the incidence of fascial disruption and incisional hernia after laparotomy in patients with suspected impaired wound healing but the incidence of wound infection may be reduced compared with that of multifilament Polyglycolic Acid suture.

  • Randomized comparison of Polyglycolic Acid and polyglyconate sutures for abdominal fascial closure after laparotomy in patients with suspected impaired wound healing.
    British Journal of Surgery, 1995
    Co-Authors: Palle Jørn Sloth Osther, B B Mortensen, Gjøde P, J. Bartholin, P B Mortensen, Gottrup F
    Abstract:

    A randomized study of abdominal fascial closure using interrupted polyglyconate and Polyglycolic Acid sutures after laparotomy was carried out in 204 consecutive patients with suspected impaired wound healing. There were no statistically significant differences between the two sutures with regard to the development of fascial disruption and incisional hernia. Wound infection demanding surgical intervention was found in 7 per cent of patients with polyglyconate sutures and in 16 per cent of those with Polyglycolic Acid sutures (P 0·04). Monofilament polyglyconate suture does not reduce the incidence of fascial disruption and incisional hernia after laparotomy in patients with suspected impaired wound healing but the incidence of wound infection may be reduced compared with that of multifilament Polyglycolic Acid suture.

Raju Francis - One of the best experts on this subject based on the ideXlab platform.

  • toughening of epoxy thermoset with polystyrene block Polyglycolic Acid star copolymer nanostructure mechanical property correlation
    Industrial & Engineering Chemistry Research, 2014
    Co-Authors: Raju Francis, Deepa K. Baby
    Abstract:

    A novel amphiphilic polystyrene-block-Polyglycolic Acid three-arm star copolymer (PS-b-PGA)3 was incorporated in epoxy thermoset to show reaction-induced microphase separation. The diblock copolymer was prepared by atom-transfer radical polymerization followed by chain end modification, and toward the end ring-opening polymerization was utilized to attach the Polyglycolic Acid moiety. The formation of polystyrene-block-Polyglycolic Acid was confirmed by using Fourier transform infrared analysis, gel permeation chromatography, and 1H NMR. The microphase separation of block copolymer resulted in the formation of ordered nanodomains in the epoxy thermoset. It was found that the block copolymer in epoxy thermoset displayed reaction-induced microphase separation behavior as evidenced by transmission electron microscopy, scanning electron microscopy, and atomic force microscopy. The tensile strength and the toughness of the thermoset were increased by the incorporation of PGA, which has high glass transition an...

  • Toughening of Epoxy Thermoset with Polystyrene-block-Polyglycolic Acid Star Copolymer: Nanostructure–Mechanical Property Correlation
    Industrial & Engineering Chemistry Research, 2014
    Co-Authors: Raju Francis, Deepa K. Baby
    Abstract:

    A novel amphiphilic polystyrene-block-Polyglycolic Acid three-arm star copolymer (PS-b-PGA)3 was incorporated in epoxy thermoset to show reaction-induced microphase separation. The diblock copolymer was prepared by atom-transfer radical polymerization followed by chain end modification, and toward the end ring-opening polymerization was utilized to attach the Polyglycolic Acid moiety. The formation of polystyrene-block-Polyglycolic Acid was confirmed by using Fourier transform infrared analysis, gel permeation chromatography, and 1H NMR. The microphase separation of block copolymer resulted in the formation of ordered nanodomains in the epoxy thermoset. It was found that the block copolymer in epoxy thermoset displayed reaction-induced microphase separation behavior as evidenced by transmission electron microscopy, scanning electron microscopy, and atomic force microscopy. The tensile strength and the toughness of the thermoset were increased by the incorporation of PGA, which has high glass transition an...

Finn Gottrup - One of the best experts on this subject based on the ideXlab platform.

  • polyglyconate or Polyglycolic Acid suture in patients with suspected impaired wound healing
    Ugeskrift for Læger, 1997
    Co-Authors: Palle Jørn Sloth Osther, P Gjode, B B Mortensen, J.b. Andersen, P B Mortensen, Finn Gottrup
    Abstract:

    : A randomized study of abdominal fascial closure using interrupted polyglyconate and Polyglycolic Acid sutures after laparotomy was carried out in 204 consecutive patients with suspected impaired wound healing. There were no statistically significant differences between the two sutures with regard to development of fascial disruption and incisional hernia. Wound infection demanding surgical intervention was found in 7% of patients with polyglyconate sutures and in 16% of those with Polyglycolic Acid sutures (p = 0.04). Monofilament polyglyconate suture does not reduce the incidence of fascial disruption and incisional hernia after laparotomy in patients with suspected impaired wound healing but the incidence of wound infection may be reduced compared with that of multifilament Polyglycolic Acid suture.

Martin I. Resnick - One of the best experts on this subject based on the ideXlab platform.

  • Use of Polyglycolic Acid Mesh to Support Parenchymal Closure Following Partial Nephrectomy
    The Journal of Urology, 1997
    Co-Authors: Mark A. Wainstein, Martin I. Resnick
    Abstract:

    AbstractPurpose: We describe the use of absorbable mesh for closure of a large parenchymal defect created by partial nephretomy.Materials and Methods: A circular piece of Polyglycolic Acid mesh was measured to approximate the diameter of the parenchymal defect and the edges were sutured to the renal capsule in a running fashion.Results: This technique has been used in 3 patients without complications. This approach has been particularly helpful for repairing large and irregular renal parenchymal defects.Conclusions: Use of Polyglycolic Acid mesh is effective for rapid, hemostatis closure of the kidney in association with partial nephrectomy.

  • Urologists at Work USE OF Polyglycolic Acid MESH TO SUPPORT PARENCHYMAL CLOSURE FOLLOWING PARTIAL NEPHRECTOMY
    1997
    Co-Authors: Mark A. Wainstein, Martin I. Resnick
    Abstract:

    Purpose: We describe the use of absorbable mesh for closure of a large parenchymal defect created by partial nephrectomy. Materials and Methods: A circular piece of Polyglycolic Acid mesh was measured to approximate the diameter of the parenchymal defect and the edges were sutured to the renal capsule in a running fashion. Results: This technique has been used in 3 patients without complications. This approach has been particularly helpful for repairing large and irregular renal parenchymal defects. Conclusions: Use of Polyglycolic Acid mesh is effective for rapid, hemostatic closure of the kidney in association with partial nephrectomy. We describe a technique of using Polyglycolic Acid mesh to aid closure of a parenchymal defect following partial nephrectomy. Nephron sparing surgery requires that the renal parenchyma be reconstructed in such a manner that closure of the kidney is hemostatic, watertight and the least traumatic to the renal tissue. With larger tumors parenchymal defects can be created that cannot be closed with traditional techniques. Tying sutures over renal parenchyma is difFicult in that they often tear thraugh the parenchyma as they are tightened and surgeons prefer to use absorbable suture to close these defects.1.2 The described technique allows for rapid and hemostatic repair of these parenchymal defects in a relatively short period. A typical case is presented. CASE HISTORY