Modeling the degradation kinetics of poly(2-hexyne) membranes via gel permeation chromatography

González‐Velasco, Juan R.; González‐Marcos, José A.; Delgado, José A.

doi:10.1016/s0376-7388(96)00332-8

Cited by 4 publications

(1 citation statement)

References 14 publications

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“…The predominant driving force should be ascribed to the unique properties of substituted polyacetylenes, such as liquid crystallinity, photoluminescence, gas and liquid permeability, and chirality and helicity 4, 5. Despite the great progress in this field, the stability of the synthesized substituted polyacetylenes still seems to be a tough problem, mainly because of the sensitivity of the double bonds in the polymer backbones to oxidation;6, 7 for cis‐rich polyacetylenes, spontaneous cis–trans conformational transformation may be another reason 8, 9. Therefore, some studies have been devoted to the degradation behavior of the involved polymers.…”

Section: Introductionmentioning

confidence: 99%

Stability of poly(N‐propargylamide)s under ultraviolet irradiation

Deng

Wang

et al. 2007

J of Applied Polymer Sci

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This article investigates the photostability of poly(N-propargylamide)s under different conditions, on the basis of which application research for this class of highly functional polymers can be performed. With helical polymer 1 [monomer: CBCCH 2 NHCOCH(C 2 H 5 ) 2 ] taken as a representative, some affecting factors, including the ultraviolet (UV)-light intensity, presence of oxygen, far-UV and near-UV light, and temperature, were investigated. It was found that increasing the UV-light intensity accelerated the degradation of polymer 1. When oxygen was present, it also facilitated the degradation. Far-UV light rather than near-UV light played a predominant role in initiating the degradation of polymer main chains. Elevating the temperature of the polymer solution during UV irradiation made the degradation accelerate. Storing the polymer under weak UV light, in the absence of oxygen, and at a low temperature was favorable for keeping the polymer stable. These findings are important not only from a scientific point of view but especially for developing practical applications of this type of polymer on the basis of its photodegradability.

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Section: Introductionmentioning

confidence: 99%

Stability of poly(N‐propargylamide)s under ultraviolet irradiation

Deng

Wang

et al. 2007

J of Applied Polymer Sci

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Kinetics of weight loss and chain scission in the thermooxidative degradation of poly[1-(trimethylsilyl)-1-propyne] films

González‐Velasco

Delgado

González‐Marcos

et al. 1999

J. Polym. Sci. A Polym. Chem.

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Size Exclusion Chromatography and Related Separation Techniques

1998

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This review covers fundamental developments and selected applications of SEC and related techniques abstracted by Chemical Abstracts and Medline from 1996 to 1997 inclusive and is a continuation of our previous review (A8). Suggestions are always welcome for improving coverage of topics.The authors gratefully acknowledge our respective companies and families for their support and assistance during the preparation of this review. We are especially thankful to Thomas C. Johns (DuPont) for the literature search strategies and Rebecca Pennington (DuPont) and Wanda Mayhew for their excellent typing skills. BOOKS, PROCEEDINGS, AND REVIEWSDuring this review period, only one book has been published dedicated to preparative SEC, with a focus on Sephadex LH-20 (A1). Conference proceedings on SEC and related techniques have been sponsored by the ACS Division of Polymeric Material Science and Engineering (A2), the International GPC Symposium (A3), the 10th Bratislava International Conference on Macromolecules (A4, A5), Rapra (A6), and the International Symposium on Polymer Analysis and Characterization (A7).Reviews on specific SEC topics and applications are covered in the appropriate sections of this article. The Selected Applications section lists specific reviews based on polymer type. Barth and co-workers (A8) presented comprehensive coverage of SEC literature from 1994 to 1995; the present review is a continuation of that format. General reviews on SEC can be found in refs A9 and A10. Machate (A11) discussed various chromatographic approaches for the characterization of coating resins, including SEC. Historical perspectives of SEC were presented by Porath (A12), who dealt with packings, and by Barth (A13) and Benoit (A14), who considered calibration approaches. Henry (A15) reviewed recent innovations in SEC and instrument design. Belenkii et al. (A16) described nonstandard methods based on SEC, such as critical chromatography, membrane chromatography, TLC, and microbore SEC.

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Modeling the degradation kinetics of poly(2-hexyne) membranes via gel permeation chromatography

Cited by 4 publications

References 14 publications

Stability of poly(N‐propargylamide)s under ultraviolet irradiation

Stability of poly(N‐propargylamide)s under ultraviolet irradiation

Kinetics of weight loss and chain scission in the thermooxidative degradation of poly[1-(trimethylsilyl)-1-propyne] films

Size Exclusion Chromatography and Related Separation Techniques

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