Studies On Poly Maleic Anhydride Co Styrene

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Studies On Poly Maleic Anhydride Co Styrene

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Author : Everett Geoffrey Meyer
language : en
Publisher:
Release Date : 1965

Studies On Poly Maleic Anhydride Co Styrene written by Everett Geoffrey Meyer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Polymerization categories.

Kinetic Study Of Styrene Maleic Anhydride Copolymers Using Succinic Anhydride As The Model Compound

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Author : Barbara M. Johanson Jauch
language : en
Publisher:
Release Date : 1997

Kinetic Study Of Styrene Maleic Anhydride Copolymers Using Succinic Anhydride As The Model Compound written by Barbara M. Johanson Jauch and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Chemical kinetics categories.

"The reaction of aniline with succinic anhydride, a low molecular weight poly[styrene-co-(maleic anhydride)], and a high molecular weight poly[styreneco-(maleic anhydride)] were used to determine if these polymer reactions are diffusion- or reaction-controlled. Kinetic study protocols were developed to determine the rate constants for the succinic anhydride/aniline model reaction and for the 50/50 and 86/14 copolymers. These protocols were then used to gather kinetic data. The succinic anhydride/aniline reaction was determined to be exothermic and to have an induction period. The succinic anhydride/aniline reaction was also determined to have an experimental rate constant of 13 L/molmin 25% at 67 +/- 1.5 degrees Celsius. For the copolymer/aniline reactions, the experimental rate constants at 67 +/- 1.5 degrees Celsius were determined to be .051 L/molmin 15% for the 50/50 polymer and .008 L/molmin 18% for the 86/14 polymer. The model reaction was found to be 250 times faster than the 50/50 polymer/aniline reaction and 1600 times faster than the 86/14 polymer/aniline reaction. The 50/50 polymer/aniline reaction was determined to be 6 times faster than the 86/14 polymer/aniline reaction. At 20 1.5 degrees Celsius, the theoretical diffusion-controlled rate constant for the succinic anhydride/aniline reaction was determined to be 7.09 x 10^11 L/molmin and the experimental rate of reaction was determined to be 0.72 L/molmin 25%. Thus, these reactions were determined to be reaction-controlled."--Abstract.

Film Balance Studies On Styrene Maleic Anhydride Copolymers

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Author : Hans Olf Esser
language : en
Publisher:
Release Date : 1965

Film Balance Studies On Styrene Maleic Anhydride Copolymers written by Hans Olf Esser and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Polymerization categories.

A Study Of The Copolymerization And Copolymers Of Itaconic Anhydride And Styrene

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Author : John Constantine Drougas
language : en
Publisher:
Release Date : 1959

A Study Of The Copolymerization And Copolymers Of Itaconic Anhydride And Styrene written by John Constantine Drougas and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1959 with Anhydrides categories.

Morphologies And Thermal Variability Of Patterned Polymer Films With High Molecular Weight Poly Styrene Co Maleic Anhydride

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Author : Pieter Samyn
language : en
Publisher:
Release Date : 2014

Morphologies And Thermal Variability Of Patterned Polymer Films With High Molecular Weight Poly Styrene Co Maleic Anhydride written by Pieter Samyn and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.

Advanced Esr Methods In Polymer Research

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Author : Shulamith Schlick
language : en
Publisher: John Wiley & Sons
Release Date : 2006-10-06

Advanced Esr Methods In Polymer Research written by Shulamith Schlick and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-10-06 with Science categories.

A definitive work on ESR and polymer science by today's leading authorities The past twenty years have seen extraordinary advances in electron spin resonance (ESR) techniques, particularly as they apply to polymeric materials. With contributions from over a dozen of the world's top polymer scientists, Advanced ESR Methods in Polymer Research is the first book to bring together all the current trends in this exciting field into one comprehensive reference. Part I establishes the fundamentals of ESR, from experimental techniques to data analysis, and serves as a valuable overview for the beginning ESR student. Part II introduces the broad range of ESR applications to polymeric systems, including living radical polymerization, block copoly-mers, polymer solutions, ion-containing polymers, polymer lattices, membranes in fuel cells, degradation, polymer coatings, dendrimers, and conductive polymers. By exposing readers to the great potential of ESR, the authors hope to encourage more extensive application of these methods.

Study Of The Temperature Dependence Of The Intrinsic Viscosity Nu For Polystyrene And Poly Styrene Co Maleic Anhydride

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Author : Rong Su
language : en
Publisher:
Release Date : 1995

Study Of The Temperature Dependence Of The Intrinsic Viscosity Nu For Polystyrene And Poly Styrene Co Maleic Anhydride written by Rong Su and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Polymers categories.

"The Mark-Houwink-Sukaroda (MHS) equation [r/J = K Mva is a very important relationship to relate polymer dilute solution's intrinsic viscosity and polymer's viscosity average molecular weight. But for a wide range of polymer (copolymer) - solvent systems, the constant K and exponent a values are usually not sufficiently available. Fox - Flory and Van Krevelen dilute solution theories are employed to correlate K and a values under different temperatures therefore prove that MHS constant K and exponent a are temperature dependent for polystyrene and styrene-co-maleic anhydride. For polystyrene, the exponent a value changes from 0.7165 at 25C to 0.7327 at 45C, the literature value at 25C is about 0.72; K value changes from 0.0128 at 25C to 0.0117 at 45C, the literature value at 25C is about 0.0135. For 92/8 poly(styrene - co - maleic anhydride), the exponent a value changes from 0.7301 at 25C to 0.7414 at 45C; K values changes from 0.0115 at 25C to 0.0108 at 45C. For 86/14 polystyrene - co - maleic anhydride), exponent a value changes from 0.7469 at 25C to 0.7593 at 45C; K values changes from 0.0102 at 25C to 0.00965 at 45C. Einstein viscosity equation is a fundamental equation to calculate polymer solution viscosity from viscometric data: r/=n (l + 0.5(f)) / (H)2 s A GPC universal calibration curve based on polystyrene standards was used to work out the viscosity average molecular weight for the sample 92/8 and 86/14 poly(styrene - co - maleic anhydride); the values fall nicely into the range which is suggested by the commercial manufacturer. For 92/8 poly(styrene - co - maleic anhydride), Mv is 2.4* 105 g/mol, for 86/14 poly(styrene - co - maleic anhydride), Mv is 1.1*105 g/mol. Theoretically, solubility parameters are calculated to predict the exponent a values, but the results are not as good as the experimental method. Therefore, some new models might be suggested to predict and correlate the MHS constant K and exponent a more reasonably."--Abstract.

Synthesis And Characterization Of Maleimide Based Polymers

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Author : Hua-Chin Chen
language : en
Publisher:
Release Date : 1991

Synthesis And Characterization Of Maleimide Based Polymers written by Hua-Chin Chen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Polymers categories.

"This study concerns the synthesis and characterization of maleimide-based monomers and polymers. N-phenylmaleimide, 4'-N-maleimido-2,3'- dimethylazobenzene and N-p-chlorophenylmaleimide monomers were formed by imidizing maleic anhydride with aniline, 4'-amino-2,3'-dimethylazobenzene and p-chloroaniline, respectively. But N-nitrophenylmaleimide monomer was produced from the nitration of N-phenylmaleimide monomer. The two homopolymers, poly-(N-p-chlorophenylmaleimide) and poly-(Nnitrophenylmaleimide), were synthesized by solution polymerization in toluene solvent. Poly-(Styrene-co-N-phenylmaleimide) and poly-(Styrene-co-4'-Nmaleimido- 2,3'-dimethylazobenzene), each with compositions of [50:50] and [92:8], were produced by imidizing maleic anhydride constructing commercial poly-(Styrene-co-maleic anhydride); [50:50] and [92:8]. Styrene and Nphenylmaleimide monomers were copolymerized in both solution and emulsion to form poly-(Styrene-co-N-phenylmaleimide). Likewise, styrene and 4'-Nmaleimido- 2,3'-dimethylazobenzene were copolymerized in both solution and emulsion to form poly-(Styrene-co-4'-N-maleimido-2,3'-dimethylazobenzene). In all, four maleimide monomers, two maleimide homopolymers, and eight maleimide copolymers were synthesized in this study. Fourier Transform Infrared Spectroscopy, Thermogravimetric Analysis and Differential Scanning Calorimetry techniques were utilized to carry out qualitative and quantitative analyses. The yields of the four monomers were not as high as expected, since toluene was not as good a solvent as either xylene or ethyl ether. However, the purities of the four monomers were considered to be very high. In addition, it is seen that the nitro group was a stronger electron-withdrawing group and led to a less thermally stable polymer compared to the chloro group. Based on the FTIR spectra of these copolymers, the following observations were made: (1) the formation of N-phenylmaleimide products from the imidization of maleic anhydride was more complete than the 4'-N-maleimido- 2,3'-dimethylazobenzene products, (2) the imidization of maleic anhydride was complete for the [92:8] copolymers, but incomplete for the [50:50] copolymers, (3) polymerization reactions including both emulsion and solution polymerizations were preferred over imidization reaction, and (4) solution polymerization was more favorable in the incorporation of imide than emulsion polymerization. From the analogy of TGA and DSC characteristics, the [50:50] and [92:8] polymers were alternating and random copolymers, respectively. Polymers synthesized by emulsion and solution polymerizations were random copolymers. The emulsion polymerized materials decomposed at higher temperatures than the solution polymerized materials. Most of the copolymer products were amorphous copolymers as no crystallization or melting behavior was observed on their DSC thermograms."--Abstract.

A Study Of Impact Strength And Viscosity Of Polycarbonate And Styrene Maleic Anhydride Copolymer Blends

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Author : David G. Bland
language : en
Publisher:
Release Date : 1983

A Study Of Impact Strength And Viscosity Of Polycarbonate And Styrene Maleic Anhydride Copolymer Blends written by David G. Bland and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with categories.

Free Radical Copolymerization Of Styrene And Maleic Anhydride

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Author : Lubertus Klumperman
language : en
Publisher:
Release Date : 1994

Free Radical Copolymerization Of Styrene And Maleic Anhydride written by Lubertus Klumperman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.