含有具有热塑性-热固性混合特性的生物基 Cardanol 分子的耐盐雾丙烯酸共聚物

IF 4.7 3区 工程技术 Q2 ENGINEERING, ENVIRONMENTAL
Cemil Dizman, Semiha Eral, Levent Babayi̇ği̇t, Nilhan Kayaman Apohan
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引用次数: 0

摘要

在这项研究中,合成并使用了一种新型生物基丙烯酸单体,这种单体提取自硬脂醇,用于制备丙烯酸共聚物,这种共聚物最初可单独用作热塑性聚合物,然后在一些干燥剂的帮助下固化,以获得与热固性聚合物类似的交联网络,其疏水长烷基链的化学结构中含有双键。合成的聚合物可用于涂料或清漆配方中,无论是否使用涂料干燥剂。通过凝胶渗透色谱法(GPC)、傅立叶变换红外光谱法(FT-IR)和质子核磁共振光谱法(1H NMR)对合成的单体和聚合物进行了表征。通过差示扫描量热仪(DSC)和热重分析(TGA)研究了聚合物和由此获得的涂层的热性能。研究和分析了清漆的热特性和涂层特性,如附着力、光泽度、硬度、耐盐雾性、触干和硬干时间。结果表明,生物基硬脂酸烷醇分子通过加入芳香族和长线性烷基链,提高了涂料的耐化学性和耐盐水暴露性,并改善了其热特性和机械特性。含有棉酚单元的嵌段共聚物既可单独用于生产热塑性聚合物薄膜,也可与干燥剂一起用于生产热固性交联网络。热固性聚合物薄膜与干燥剂的接触角为 77°,而热塑性空白聚合物的接触角为 61°。此外,空白聚合物的 Tg 为 13.37 °C,但加入 10% 的卡旦醇单元和少量干燥剂后,Tg 升至 53.12 °C。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Salt Spray Resistant Acrylic Copolymers Containing Bio-based Cardanol Molecules with Hybrid Thermoplastic-Thermoset Characteristics

Salt Spray Resistant Acrylic Copolymers Containing Bio-based Cardanol Molecules with Hybrid Thermoplastic-Thermoset Characteristics

Salt Spray Resistant Acrylic Copolymers Containing Bio-based Cardanol Molecules with Hybrid Thermoplastic-Thermoset Characteristics

In this study, a novel bio-based acrylic monomer derived from cardanol was synthesized and used in order to prepare acrylic copolymers that can be applied as thermoplastic polymers alone initially and then curable with the help of some driers to get a crosslink network similar to thermosetting polymers with their hydrophobic long alkyl chains having double bonds in their chemical structure. The synthesized polymers have the ability to be used in the paint or varnish formulations with or without paint driers. The synthesized monomers and polymers were characterized by gel permeation chromatography (GPC), Fourier transform infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance spectroscopy (1H NMR). Thermal properties of the polymers and obtained coatings therefrom were studied by differential scanning calorimeter (DSC) and thermal gravimetric analysis (TGA). The varnish’s thermal and coating characteristics, such as its adhesion, gloss, hardness, salt spray resistance, and touch and hard drying times, were examined and analyzed. The results showed that the bio-based cardanol moieties improved the coatings’ resistance to chemicals and saltwater exposure as well as their thermal and mechanical characteristics through the incorporation aromatic and long linear alkyl chains. The block copolymers with cardanol units were used both on its own to produce thermoplastic polymeric films and in conjunction with driers to get thermoset crosslinking networks. The contact angle of thermoset polymeric films with driers measured as 77° but in case of thermoplastic blank polymer, it was 61°. Furthermore, the Tg of blank polymer was 13.37 °C, but with the addition of 10% cardanol units and a small amount of driers, the Tg was increased to 53.12 °C.

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来源期刊
Journal of Polymers and the Environment
Journal of Polymers and the Environment 工程技术-高分子科学
CiteScore
9.50
自引率
7.50%
发文量
297
审稿时长
9 months
期刊介绍: The Journal of Polymers and the Environment fills the need for an international forum in this diverse and rapidly expanding field. The journal serves a crucial role for the publication of information from a wide range of disciplines and is a central outlet for the publication of high-quality peer-reviewed original papers, review articles and short communications. The journal is intentionally interdisciplinary in regard to contributions and covers the following subjects - polymers, environmentally degradable polymers, and degradation pathways: biological, photochemical, oxidative and hydrolytic; new environmental materials: derived by chemical and biosynthetic routes; environmental blends and composites; developments in processing and reactive processing of environmental polymers; characterization of environmental materials: mechanical, physical, thermal, rheological, morphological, and others; recyclable polymers and plastics recycling environmental testing: in-laboratory simulations, outdoor exposures, and standardization of methodologies; environmental fate: end products and intermediates of biodegradation; microbiology and enzymology of polymer biodegradation; solid-waste management and public legislation specific to environmental polymers; and other related topics.
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