Modification and compounding of polyhydroxybutyrate / Safaa Hamdy Ibrahim Mohammed ElTaweel ; supervised Ashraf Ahmed Mansour , Samy Madbouly , Hartmut Seliger

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Safaa Hamdy Ibrahim Mohammed ElTaweel

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Language: Eng Publication details: Cairo : Safaa Hamdy Ibrahim Mohammed ElTaweel , 2005Description: 243P : ill ; 30cmOther title:

تحوير وتوليف البولى هيدروكسى بيوتيرات [Added title page title]

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Dissertation note: Thesis (PH.D.) - Cairo University - Faculty Of Science - Department Of Physical Chemistry Summary: A series of atactic amorphous oligo[R , S - hydroxybutyric acid] with different molar mass was synthesized in order to blend this materials with bacterial crystalline polyhydroxybutyrate (PHB) The glass transition of the mobile amorphous phase fraction and the amount of rigid amorphous fraction were determined by calorimetric and dielectric methodsThe crystallization kinetics was observed by polarizing microscope and compared with the prediction of the theory of Boon and AzcueTernary blends of PHB with polyvinylacetate and oligomers were also investigatedTensile tests at different temperature (20 oC - 90 oC) have been carried out with respect to technical applications of these blends

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Item type	Current library	Home library	Call number	Copy number	Status	Barcode
Thesis	قاعة الرسائل الجامعية - الدور الاول	المكتبة المركزبة الجديدة - جامعة القاهرة	Cai01.12.11.Ph.D.2005.Sa.M. (Browse shelf(Opens below))		Not for loan	01010110043688000
CD - Rom	مخـــزن الرســائل الجـــامعية - البدروم	المكتبة المركزبة الجديدة - جامعة القاهرة	Cai01.12.11.Ph.D.2005.Sa.M. (Browse shelf(Opens below))	43688.CD	Not for loan	01020110043688000

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Thesis (PH.D.) - Cairo University - Faculty Of Science - Department Of Physical Chemistry

A series of atactic amorphous oligo[R , S - hydroxybutyric acid] with different molar mass was synthesized in order to blend this materials with bacterial crystalline polyhydroxybutyrate (PHB) The glass transition of the mobile amorphous phase fraction and the amount of rigid amorphous fraction were determined by calorimetric and dielectric methodsThe crystallization kinetics was observed by polarizing microscope and compared with the prediction of the theory of Boon and AzcueTernary blends of PHB with polyvinylacetate and oligomers were also investigatedTensile tests at different temperature (20 oC - 90 oC) have been carried out with respect to technical applications of these blends

Issued also as CD

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