Crystallinity and Melting of Functionalized Poly(2,6-dimethyl-1,4-phenylene) oxide (PPO)

IF 4.4 2区化学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Polymer Materials Pub Date : 2024-06-25 DOI:10.1021/acsapm.4c01314

Salman Syed, Baku Nagendra, Maria Rosaria Acocella, Christophe Daniel, Paola Rizzo, Oreste Tarallo and Gaetano Guerra*,

引用次数: 0

Abstract

Co-crystalline and nanoporous-crystalline poly(2,6-dimethyl-1,4-phenylene) oxide (PPO) phases can be achieved for randomly functionalized PPO. In fact, WAXD, DSC, and FTIR studies show the presence of remarkable crystallinity in PPO films with chloroacetyl (−COCH₂Cl) side groups up to 17 mol %. More surprisingly, polymer melting temperature remains constant in the range 244−246 °C up to a degree of functionalization of 12 mol %. This behavior is unprecedented in polymer science and can be rationalized by side-group inclusion in PPO intrahelical crystalline channels.

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功能化聚(2,6-二甲基-1,4-苯基)氧化物 (PPO) 的结晶度和熔融性

无规官能化的聚苯醚（PPO）可形成共晶和纳米多孔结晶聚（2,6-二甲基-1,4-亚苯基）氧化物（PPO）相。事实上，WAXD、DSC 和傅立叶变换红外光谱研究表明，氯乙酰（-COCH2Cl）侧基含量高达 17 摩尔% 的 PPO 薄膜具有显著的结晶性。更令人惊讶的是，在官能化程度达到 12 摩尔 % 时，聚合物的熔化温度仍保持在 244-246 ℃ 范围内。这种行为在聚合物科学中是前所未有的，可以通过侧基包含在 PPO 螺旋内结晶通道中得到合理解释。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Applied Polymer Materials Multiple-

CiteScore

7.20

自引率

6.00%

发文量

810

期刊介绍： ACS Applied Polymer Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics, and biology relevant to applications of polymers. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates fundamental knowledge in the areas of materials, engineering, physics, bioscience, polymer science and chemistry into important polymer applications. The journal is specifically interested in work that addresses relationships among structure, processing, morphology, chemistry, properties, and function as well as work that provide insights into mechanisms critical to the performance of the polymer for applications.