伪阶梯单羟基悬垂聚苯并双噻唑芳杂环热塑性聚合物的合成与表征

IF 0.5 Q4 EDUCATION & EDUCATIONAL RESEARCH

Rasayan Journal of Chemistry Pub Date : 2023-01-01 DOI:10.31788/rjc.2023.1628360

Roli Verma, Kirti Srivastava, R. Jagadish, Rama Dubey

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引用次数: 0

摘要

5-羟基间苯二甲酸和二苯二甲酸与2,5-二氨基1,4-苯二硫醇盐酸盐(DABDT.2 HCl)的各向异性聚合得到聚合物{[苯并(1,2-d: 4,5-d ')双噻唑- 2,6二基]-1,3苯基}和聚{[苯并(1,2-d: 4,5-d ')双噻唑- 2,6二基]-1,3(5-羟基苯基)}。两种聚合物均可溶于甲磺酸和氯磺酸。通过DSC分析，聚苯并双噻唑没有显示任何玻璃化转变温度(Tg)。根据热重测量，聚苯并双噻唑在氮环境中高达400℃稳定。通过元素分析和光谱比较，确定了聚合物的结构。聚合物的固有粘度达到4.2 dL/g(甲磺酸，30℃)。

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SYNTHESIS AND CHARACTERIZATION OF PSEUDO LADDER MONO HYDROXY PENDANT POLYBENZOBISTHIAZOLE AROMATIC HETERO-CYCLIC THERMOPLASTIC POLYMER

Anisotropic polymerization of 5-hydroxy isophthalic acid and isophthalic acid with 2,5-diamino 1,4-benzene dithiol dihydrochloride (DABDT.2 HCl) affords the polymer poly {[benzo (1,2-d: 4,5-d’) bisthiazole-2, 6 diyl]-1,3 phenylene} and poly {[benzo (1,2-d: 4,5-d’) bisthiazole-2, 6 diyl]-1,3(5-hydroxy phenylene)}. Both the polymers were soluble in methanesulphonic acid and chlorosulphonic acid. The polybenzobisthiazoles do not show any glass transition temperature (Tg) by DSC analysis. The polybenzobisthiazoles were stable up to 400oC in a nitrogen environment, according to thermo gravimetric measurements. Elemental analysis and spectroscopic comparison of the polymers with the appropriate model compounds were used to confirm the polymer structures. The polymers' inherent viscosity reached 4.2 dL/g (methanesulphonic acid, 30oC).

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来源期刊

Rasayan Journal of Chemistry Energy-Energy (all)

CiteScore

1.90

自引率

0.00%

发文量

196

期刊介绍： RASĀYAN Journal of Chemistry [RJC] signifies a confluence of diverse streams of chemistry to stir up the cerebral powers of its contributors and readers. By introducing the journal by this name, we humbly intent to provide an open platform to all researchers, academicians and readers to showcase their ideas and research findings among the people of their own fraternity and to share their vast repository of knowledge and information. The journal seeks to embody the spirit of enquiry and innovation to augment the richness of existing chemistry literature and theories. We also aim towards making this journal an unparalleled reservoir of information and in process aspire to inculcate and expand the research aptitude.