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Blowing Process

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Salvatore Iannace – 1st expert on this subject based on the ideXlab platform

  • the effects of different starch sources and plasticizers on film Blowing of thermoplastic starch correlation among Process elongational properties and macromolecular structure
    Carbohydrate Polymers, 2009
    Co-Authors: R. Zullo, Salvatore Iannace

    Abstract:

    Abstract The material compositions and the technological procedures to prepare biodegradable films with the film Blowing technology based on thermoplastic starch were studied in this work. The activities were focused on the analysis of the effects of starch source (maize, potato and wheat), supplier (Roquette, Cerestar and Cameo) and the type of plasticizers (glycerol, urea and formamide) and their content on the physical–chemical and mechanical properties. Moreover, in order to develop a film Blowing technology, material composition as well as Processing condition were optimized. Among 10 varieties of thermoplastic starch prepared, the combination of urea and formamide as plasticizer restrained retrogradation and improved mechanical properties. Extensional rheological properties of the thermoplastic starch films were also investigated: the results showed that the occurrence of strain-hardening behaviour in some of the investigated compositions lead to a positive effect on the film Blowing Process. In this study we found that the combination of high-amylose (>51%) starch and urea/formamide mixtures as plasticizer produced an homogenous film of a 50 μm thickness and a robust film Blowing Process due to the good elongational viscosity, high deformability of the melt and strain-hardening behaviour.

  • The effects of different starch sources and plasticizers on film Blowing of thermoplastic starch: Correlation among Process, elongational properties and macromolecular structure
    Carbohydrate Polymers, 2009
    Co-Authors: R. Zullo, Salvatore Iannace

    Abstract:

    The material compositions and the technological procedures to prepare biodegradable films with the film Blowing technology based on thermoplastic starch were studied in this work. The activities were focused on the analysis of the effects of starch source (maize, potato and wheat), supplier (Roquette, Cerestar and Cameo) and the type of plasticizers (glycerol, urea and formamide) and their content on the physical-chemical and mechanical properties. Moreover, in order to develop a film Blowing technology, material composition as well as Processing condition were optimized. Among 10 varieties of thermoplastic starch prepared, the combination of urea and formamide as plasticizer restrained retrogradation and improved mechanical properties. Extensional rheological properties of the thermoplastic starch films were also investigated: the results showed that the occurrence of strain-hardening behaviour in some of the investigated compositions lead to a positive effect on the film Blowing Process. In this study we found that the combination of high-amylose (>51%) starch and urea/formamide mixtures as plasticizer produced an homogenous film of a 50 μm thickness and a robust film Blowing Process due to the good elongational viscosity, high deformability of the melt and strain-hardening behaviour. © 2009 Elsevier Ltd. All rights reserved.

Marcia P. Miceli – 2nd expert on this subject based on the ideXlab platform

  • Organizational dissidence: The case of whistle-Blowing
    Citation Classics from The Journal of Business Ethics: Celebrating the First Thirty Years of Publication, 2013
    Co-Authors: Janet P. Near, Marcia P. Miceli

    Abstract:

    Research on whistle-Blowing has been hampered by a lack of a sound theoretical base. In this paper, we draw upon existing theories of motivation and power relationships to propose a model of the whistle-Blowing Process. This model focuses on decisions made by organization members who believe they have evidence of organizational wrongdoing, and the reactions of organization authorities. Based on a review of the sparse empirical literature, we suggest variables that may affect both the members’ decisions and the organization’s responses.

  • does type of wrongdoing affect the whistle Blowing Process
    Business Ethics Quarterly, 2004
    Co-Authors: Janet P. Near, Michael T Rehg, James R Van Scotter, Marcia P. Miceli

    Abstract:

    We analyzed data from a survey of employees of a large military base in order to assess possible differences in the whistle-Blowing Process due to type of wrongdoing observed. Employees who observed perceived wrongdoing involving mismanagement, sexual harassment, or unspecified legal violations were significantly more likely to report it than were employees who observed stealing, waste, safety problems, or discrimination. Further, type of wrongdoing was significantly related to reasons given by employees who observed wrongdoing but did not report it, across all forms of wrongdoing. However, the primary reason that observers did not report it was that they thought nothing could be done to rectify the situation. Finally, type of wrongdoing was significantly related to the cost of the wrongdoing, the quality of the evidence about the wrongdoing, and the comprehensiveness of retaliation against the whistle-blower. These findings suggest that type of wrongdoing makes a difference in the whistle-Blowing Process, and it should be examined in future research.

  • Does Type of Wrongdoing Affect the Whistle-Blowing Process ?
    Business Ethics Quarterly, 2004
    Co-Authors: Janet P. Near, Michael T Rehg, James R Van Scotter, Marcia P. Miceli

    Abstract:

    t: We analyzed data from a survey of employees of a large mili- tary base in order to assess possible differences in the whistlewBlowing Process due to type of wrongdoing observed. Employees who observed perceived wrongdoing involving mismanagement, sexual harassment, or unspecified legal violations were significantly more likely to report it than were employees who observed stealingw wastel safety probS lems, or discrimination. Furtherl type of wrongdoing was significantly related to reasons given by employees who observed wrongdoing but did not report itl across all forms of wrongdoing. Howeverl the primary reason that observers did not report it was that they thought nothing could be done to rectify the situation. Finally, type of wrongdoing was significantly related to the cost of the wrongdoing, the quality of the evidence about the wrongdoing, and the comprehensiveness of retaliw ation against the whistle-blower. These findings suggest that type of wrongdoing makes a difference in the whistle-Blowing Process, and it should be examined in future research. Time

R. Zullo – 3rd expert on this subject based on the ideXlab platform

  • the effects of different starch sources and plasticizers on film Blowing of thermoplastic starch correlation among Process elongational properties and macromolecular structure
    Carbohydrate Polymers, 2009
    Co-Authors: R. Zullo, Salvatore Iannace

    Abstract:

    Abstract The material compositions and the technological procedures to prepare biodegradable films with the film Blowing technology based on thermoplastic starch were studied in this work. The activities were focused on the analysis of the effects of starch source (maize, potato and wheat), supplier (Roquette, Cerestar and Cameo) and the type of plasticizers (glycerol, urea and formamide) and their content on the physical–chemical and mechanical properties. Moreover, in order to develop a film Blowing technology, material composition as well as Processing condition were optimized. Among 10 varieties of thermoplastic starch prepared, the combination of urea and formamide as plasticizer restrained retrogradation and improved mechanical properties. Extensional rheological properties of the thermoplastic starch films were also investigated: the results showed that the occurrence of strain-hardening behaviour in some of the investigated compositions lead to a positive effect on the film Blowing Process. In this study we found that the combination of high-amylose (>51%) starch and urea/formamide mixtures as plasticizer produced an homogenous film of a 50 μm thickness and a robust film Blowing Process due to the good elongational viscosity, high deformability of the melt and strain-hardening behaviour.

  • The effects of different starch sources and plasticizers on film Blowing of thermoplastic starch: Correlation among Process, elongational properties and macromolecular structure
    Carbohydrate Polymers, 2009
    Co-Authors: R. Zullo, Salvatore Iannace

    Abstract:

    The material compositions and the technological procedures to prepare biodegradable films with the film Blowing technology based on thermoplastic starch were studied in this work. The activities were focused on the analysis of the effects of starch source (maize, potato and wheat), supplier (Roquette, Cerestar and Cameo) and the type of plasticizers (glycerol, urea and formamide) and their content on the physical-chemical and mechanical properties. Moreover, in order to develop a film Blowing technology, material composition as well as Processing condition were optimized. Among 10 varieties of thermoplastic starch prepared, the combination of urea and formamide as plasticizer restrained retrogradation and improved mechanical properties. Extensional rheological properties of the thermoplastic starch films were also investigated: the results showed that the occurrence of strain-hardening behaviour in some of the investigated compositions lead to a positive effect on the film Blowing Process. In this study we found that the combination of high-amylose (>51%) starch and urea/formamide mixtures as plasticizer produced an homogenous film of a 50 μm thickness and a robust film Blowing Process due to the good elongational viscosity, high deformability of the melt and strain-hardening behaviour. © 2009 Elsevier Ltd. All rights reserved.