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首页> 外文期刊>RSC Advances >Mono-acrylated isosorbide as a bio-based monomer for the improvement of thermal and mechanical properties of poly(methyl methacrylate)
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Mono-acrylated isosorbide as a bio-based monomer for the improvement of thermal and mechanical properties of poly(methyl methacrylate)

机译：单丙烯酸异山梨酯作为生物基单体，用于改善聚甲基丙烯酸甲酯的热和机械性能

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摘要

Despite its optical clarity and good weatherability, poly(methyl methacrylate) (PMMA) cannot meet the needs of special occasions due to its deficient thermal and mechanical properties. To overcome these shortcomings, a type of novel bio-based monomer, mono-acrylated isosorbide, was used as a comonomer for the poly(methyl methacrylate) via a solution polymerization process. The chemical structure, the thermal and mechanical properties of the copolymerized PMMA were characterized. When the molar content of the mono-acrylated isosorbide was increased from 0% to 15%, the glass transition temperature T _(g) of the copolymerized PMMA was increased from 151.2 °C to 172.5 °C, and the initial decomposition temperature ( T _(5%) ) was increased from 323.1 °C to 396.3 °C. Moreover, the impact strength of copolymerized PMMA increased from 10.59 kJ m ~(?2) to 17.19 kJ m ~(?2) and the tensile strength improved from 84.02 MPa to 97.56 MPa when the mono-acrylated isosorbide was incorporated with different contents. The incorporation of rigid and thermally stable isosorbide could contribute to the improved thermal and mechanical properties of PMMA, which would find important applications in the military and aeronautical materials under harsh service environments.
机译：尽管聚甲基丙烯酸甲酯（PMMA）具有光学透明性和良好的耐候性，但由于其热和机械性能不足，无法满足特殊场合的需求。为了克服这些缺点，通过溶液聚合方法，将一种新型的生物基单体，单丙烯酸酯化的异山梨醇酯用作聚甲基丙烯酸甲酯的共聚单体。表征了共聚PMMA的化学结构，热力学性能和力学性能。当单丙烯酸酯化的异山梨醇的摩尔含量从0％增加到15％时，共聚的PMMA的玻璃化转变温度T _（g）从151.2°C升高到172.5°C，并且初始分解温度（T _（5％））从323.1°C增加到396.3°C。而且，当掺入不同含量的单丙烯酸酯化的异山梨醇酯时，共聚的PMMA的冲击强度从10.59kJm 2（〜2）增加到17.19kJ m 2（2），并且拉伸强度从84.02MPa增加到97.56MPa。刚性和热稳定的异山梨醇酯的加入可有助于改善PMMA的热和机械性能，这将在苛刻的服务环境下在军事和航空材料中找到重要的应用。

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