大连理工大学主页平台管理系统蹇锡高杂萘联苯聚芳醚功能材料研究中文主页

论文成果

Synthesis, characterization and properties of heat-resistant and soluble poly(aryl ether)s containing s-triazine units in the main chain: 点击次数：; 发布时间： 2019-03-09; 发布时间：2019-03-09; 论文类型：期刊论文; 发表时间：2009-07-01; 发表刊物：POLYMER DEGRADATION AND STABILITY; 收录刊物：Scopus、EI、SCIE; 卷号：94; 期号：7; 页面范围：1053-1060; ISSN号：0141-3910; 关键字：s-Triazine; Poly(aryl ether)s; Heat-resistant; Activation energy; Thermodynamics; 摘要：Soluble and heat-resistant s-triazine-containing poly(aryl ether)s have been prepared for their potent utilities as high-temperature membranes and composite matrix materials. They have been synthesized by the nucleophilic displacement polymerization of 2,4-bis(4-fluorophenyl)-6-phenyl-1,3,5-triazine (BFPT) with each of resorcinol (RS), 4,4'-dihydroxydiphenyl sulfone (DS), and bisphenol-like 4-(4-hydroxylphenyl)(2H)-phthalazin-1-one (HP). The presence of meta-ether linkages, sulfone groups or phthalazinone moieties in the polymer chain results in an improvement in the solubility of s-triazinecontaining poly(aryl ether)s in common organic solvents (e.g., N,M-dimethylacetamide, N-methyl-2-pyrrolidinone). The new polymers are amorphous and exhibit excellent thermal stability. The apparent activation energy values (Ea) as determined by using Kissinger method are respectively 268.1, 245.9 and 215.1 kJ/mol under N(2) flow in dynamic heating conditions, for the first degradation stage of RS-PE, DS-PE and HP-PE, which are in well agreement with those values (272.6, 249.9 and 239.1 kJ/mol) determined by using Flynn-Wall-Ozawa method. The thermal stability classification among the polymers is made on the basis of the E, values, and it follows the decreasing order: RS-PE > DS-PE > HP-PE. The properties of these polymers have been also compared with those of corresponding poly(aryl ether)s. (C) 2009 Elsevier Ltd. All rights reserved.

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蹇锡高

同专业博导同专业硕导个人学术主页

教授博士生导师硕士生导师

性别：男

毕业院校：大连工学院

学位：硕士

所在单位：化工学院

学科：高分子材料. 高分子化学与物理. 膜科学与技术

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