Nitroxide mediated miniemulsion polymerization of methacryloisobutyl POSS: Homopolymers and copolymers with alkyl methacrylates,Journal of Polymer Science

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Nitroxide mediated miniemulsion polymerization of methacryloisobutyl POSS: Homopolymers and copolymers with alkyl methacrylates
Journal of Polymer Science ( IF 3.9 ) Pub Date : 2020-08-28 , DOI: 10.1002/pol.20200438
Saeid Tajbakhsh ₁ , Milan Marić ₁

Affiliation

Nitroxide mediated polymerization (NMP) of methacryloisobutyl POSS (POSSMA) was conducted in a dispersed aqueous miniemulsion at 90°C, resulting in stable latexes with particle sizes = 225–260 nm at solids loading = 22%. POSSMA homopolymers with

{\bar{M}}_{n}

up to 35.9 kg mol⁻¹ (Đ < 1.53) was prepared using Dispolreg 007 alkoxyamine without any controlling comonomers, as is traditionally required for NMP of methacrylates. Copolymers with different ratios of POSSMA and bio‐based C13 methacrylic esters were also synthesized (monomer conversion [X] up to 96.5% and 1.42 < Đ < 1.68) to prepare polymer resins with a wide range of glass transition temperatures (T_g) or melting points (T_m) (−30°C < T_g, T_m < 96°C). The resulting homopolymers and copolymers exhibited semi‐crystalline properties, with crystallite size of 20.3–44.4 Å.

中文翻译：

一氧化氮介导的甲基丙烯酸异丁酯POSS的细乳液聚合：均聚物和与甲基丙烯酸烷基酯的共聚物

甲基丙烯酸异丁酯POSS（POSSMA）的一氧化氮介导的聚合（NMP）在分散的水性细乳液中于90°C进行，得到稳定的乳胶，粒径为225-260 nm，固含量为22％。POSSMA均聚物与

{\bar{中号}}_{ñ}

使用Dispolreg 007烷氧基胺制备了高达35.9 kg mol ^-1（Đ <1.53），而没有任何控制性共聚单体，这是甲基丙烯酸NMP的传统要求。还合成了具有不同比例的POSSMA和生物基C13甲基丙烯酸酯的共聚物（单体转化率[ X ]高达96.5％和1.42 < Đ <1.68），以制备具有宽范围玻璃化转变温度（T _g）的聚合物树脂或熔点（Ť_米）（-30℃< Ť_克，Ť_米<96℃）。所得的均聚物和共聚物表现出半结晶性质，微晶尺寸为20.3–44.4Å。

更新日期：2020-10-02

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