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多笼型倍半硅氧烷增强聚苯乙烯的热降解和热氧化降解动力学研究

Kinetic Study of the Thermal and Thermo-Oxidative Degradations of Polystyrene Reinforced with Multiple-Cages POSS.

作者信息

Blanco Ignazio, Cicala Gianluca, Tosto Claudio, Bottino Francesco Agatino

机构信息

Department of Civil Engineering and Architecture, University of Catania an UdR-Catania Consorzio INSTM, Viale Andrea Doria 6, 95125 Catania, Italy.

Department of Chemical Sciences, University of Catania, Viale Andrea Doria 6, 95125 Catania, Italy.

出版信息

Polymers (Basel). 2020 Nov 19;12(11):2742. doi: 10.3390/polym12112742.

DOI:10.3390/polym12112742
PMID:33227908
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7699152/
Abstract

A comprehensive kinetics degradation study is carried out on novel multiple cages polyhedral oligomeric silsesquioxane (POSS)/polystyrene (PS) composites at 5% (/) of POSS to assess their thermal behavior with respect to the control PS and other similar POSS/PS systems studied in the past. The composites are synthesized by in situ polymerization of styrene in the presence of POSSs and characterized by H-NMR. The characteristics of thermal parameters are determined using kinetics literature methods, such as those developed by Kissinger and Flynn, Wall, and Ozawa (FWO), and discussed and compared with each other and with those obtained in the past for similar POSS/PS composites. A good improvement in the thermal stability with respect to neat polymer is found, but not with respect to those obtained in the past for polystyrene reinforced with single- or double-POSS cages. This behavior is attributed to the greater steric hindrance of the three-cages POSS compared with those of single- or double-cage POSS molecules.

摘要

对新型多笼型多面体低聚倍半硅氧烷（POSS）/聚苯乙烯（PS）复合材料进行了全面的动力学降解研究，POSS含量为5%（/），以评估其相对于对照PS以及过去研究的其他类似POSS/PS体系的热行为。这些复合材料通过在POSS存在下苯乙烯的原位聚合合成，并通过H-NMR进行表征。使用动力学文献方法，如基辛格法以及弗林、沃尔和小泽（FWO）法，确定热参数的特征，并相互讨论和比较，同时与过去类似POSS/PS复合材料获得的结果进行比较。相对于纯聚合物，热稳定性有了显著提高，但相对于过去用单笼或双笼POSS增强的聚苯乙烯所获得的热稳定性则没有提高。这种行为归因于三笼型POSS与单笼或双笼型POSS分子相比具有更大的空间位阻。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3c77/7699152/cead5ad8d836/polymers-12-02742-g004a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3c77/7699152/29337b9334f8/polymers-12-02742-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3c77/7699152/6cc4cafed5a3/polymers-12-02742-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3c77/7699152/519cb6088a0d/polymers-12-02742-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3c77/7699152/cead5ad8d836/polymers-12-02742-g004a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3c77/7699152/29337b9334f8/polymers-12-02742-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3c77/7699152/6cc4cafed5a3/polymers-12-02742-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3c77/7699152/519cb6088a0d/polymers-12-02742-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3c77/7699152/cead5ad8d836/polymers-12-02742-g004a.jpg

相似文献

[1]
Kinetic Study of the Thermal and Thermo-Oxidative Degradations of Polystyrene Reinforced with Multiple-Cages POSS.

Polymers (Basel). 2020-11-19

[2]
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[3]
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[5]
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[6]
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[7]
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[8]
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[9]
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[10]
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引用本文的文献

[1]
Flame-Retardant GF-PSB/DOPO-POSS Composite with Low Dk/Df and High Thermal Stability for High-Frequency Copper Clad Applications.

Polymers (Basel). 2024-2-17

[2]
Effect of Na- and Organo-Modified Montmorillonite/Essential Oil Nanohybrids on the Kinetics of the In Situ Radical Polymerization of Styrene.

Nanomaterials (Basel). 2021-2-13

本文引用的文献

[1]
Functionalized polyhedral oligosilsesquioxane (POSS) based composites for bone tissue engineering: synthesis, computational and biological studies.

RSC Adv. 2020-3-19

[2]
Progress in the Synthesis of Bifunctionalized Polyhedral Oligomeric Silsesquioxane.

Polymers (Basel). 2019-12-14

[3]
POSS-Based Polymers.

Polymers (Basel). 2019-10-22

[4]
Polystyrene Nanocomposites Reinforced with Novel Dumbbell-Shaped Phenyl-POSSs: Synthesis and Thermal Characterization.

Polymers (Basel). 2019-9-9

[5]
PES/POSS Soluble Veils as Advanced Modifiers for Multifunctional Fiber Reinforced Composites.

Polymers (Basel). 2017-7-13

[6]
The Rediscovery of POSS: A Molecule Rather than a Filler.

Polymers (Basel). 2018-8-11

[7]
Lifetime Prediction of Polymers: To Bet, or Not to Bet-Is This the Question?

Materials (Basel). 2018-8-8

[8]
Sonication-Induced Modification of Carbon Nanotubes: Effect on the Rheological and Thermo-Oxidative Behaviour of Polymer-Based Nanocomposites.

Materials (Basel). 2018-3-5

[9]
An overview of chemical additives present in plastics: Migration, release, fate and environmental impact during their use, disposal and recycling.

J Hazard Mater. 2017-10-9

[10]
Thermal stability of disodium and calcium phosphomycin and the effects of the excipients evaluated by thermal analysis.

J Pharm Biomed Anal. 2001-3

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