乙烯基咔唑与八乙烯基倍半硅氧烷共聚研究
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摘要
聚乙烯基咔唑在光电领域具有很好的应用前景,但溶解度差,实际应用发光效率低,耐热性较差,限制了其应用.本文将乙烯基咔唑与八乙烯基笼型倍半硅氧烷在AIBN引发下共聚合,考察了聚合反应时间、温度、OVPOSS用量等的影响.结果表明,OVPOSS用量为10%,在120℃下聚合12 h时产物分子量和收率都较高.将OVPOSS与PVK共聚后,聚合物热稳定性得到改善.
Polyvinyl carbazole has wide application prospects in optoelectronics, however, its shortcomings including poor solubility, low luminous efficiency and poor thermal resistance limit its further applications. In this paper, the copolymerization of vinylcarbazole with octavinyl caged silsesquioxane initiated by AIBN is carried out. The effects of reaction time, polymerization temperature and the amount of OVPOSS are investigated. The results show that both the molecular weight and yield of the product are fairly high at 120 ℃ for 12 h, and the thermal stability of the polymer is improved.
Polyvinyl carbazole has wide application prospects in optoelectronics, however, its shortcomings including poor solubility, low luminous efficiency and poor thermal resistance limit its further applications. In this paper, the copolymerization of vinylcarbazole with octavinyl caged silsesquioxane initiated by AIBN is carried out. The effects of reaction time, polymerization temperature and the amount of OVPOSS are investigated. The results show that both the molecular weight and yield of the product are fairly high at 120 ℃ for 12 h, and the thermal stability of the polymer is improved.
引文
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[2] 杨云仙,杨继萍,周冰,等.侧链含噻吩基团的改性乙烯基咔唑聚合物的合成与表征[J].高分子材料科学与工程,2012,28(12):37-39.
[3] 柳滢春,郭建维,罗涛,等.(乙烯基咔唑-对金刚烷基苯乙烯)共聚物的合成与光致发光性能[J].广东工业大学学报,2018,35(1):73-76.
[4] RAHMAN M S, HAMMED W A,YAHYAH R, et al. Optoelectrical and photoluminescence quenching properties of poly(N-vinyl carbazole)-polypyrrole/ reduced graphene oxide nanocomposites[J].Synthetic Metals,2017,226:188-194.
[5] SZOLYGA M, DUTKIEWICZ M, MARCINIEC B. Polyurethane composites based on silsesquioxane derivatives of different structures[J].J ThermAnaly Calorim,2018,132(3):1693-1706.
[6] 鲍好园,方丽婷,申艳平,等.主链含苯基梯形聚倍半硅氧烷的嵌段共聚物的制备[J].杭州师范大学学报(自然科学版),2017,16(6):561-566.
[7] ZHANG W C, CAMINO G, YANG R J. Polymer/polyhedral oligomeric silsesquioxane (POSS) nanocomposites:An overview of fire retardance [J].Prog Polym Sci,2017,67:77-125.
[8] KUO S W, CHANG F C. POSS related polymer nanocomposites[J].Prog Polym Sci, 2011,36(12):1649-1696.
[9] KOIZUMI R, KIMURA T, NAKABAYASHI K, et al. Amphiphilic silsesquioxane nanoparticles by hydrolytic condensation of Y-shaped triethoxysilanes having hydroxyl and fluoroalkyl groups:Synthesis, self-assembly, and surface properties[J].Polymer,2017,110:260-272.
[10] 田堃,李泽,李美江,等.含多面体低聚倍半硅氧烷超支化聚合物的研究进展[J].杭州师范大学学报(自然科学版),2016,15(1):7-13.
[11] YANG Z, FENG L, DIAO S, et al. Study on the synthesis and thermal degradation of silicone resin containing silphenylene units[J].Thermochim Acta,2011,521(1/2):170-175.
[12] HUANG K, HOU C, HU B, et al. Preparation and property analysis of a heat-resistant and anti-eroding coating[J].Procedia Engineering,2012,27:1228-1232.
[13] 杨琳琳,聚倍半硅氧烷(POSS)改性的LED封装硅胶[D].杭州:杭州师范大学,2013