Copolymers incorporated with β-substituted acrylate synthesized by organo-catalyzed group-transfer polymerization
Copolymers incorporated with β-substituted acrylate synthesized by organo-catalyzed group-transfer polymerization
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通过有机催化基团转移聚合合成的掺有 β-取代丙烯酸酯的共聚物
DOI:
10.1038/s41428-021-00493-z
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发表时间:
2021
期刊:
影响因子:
2.8
通讯作者:
Abe Hideki
中科院分区:
文献类型:
--
作者:
Imada Motosuke;Takenaka Yasumasa;Tsuge Takeharu;Abe Hideki
Various copolymers incorporated with β-substituted acrylates, such as alkyl crotonates (e.g., methyl crotonate (MC), ethyl crotonate (EC), isopropyl crotonate (iPC), andn-butyl crotonate (nBC)) and methyl cinnamate (MCin), were synthesized by group-transfer polymerization (GTP) using a silicon-based Lewis acid catalyst. In addition to β-substituted acrylates, α-substituted acrylates (e.g., methyl methacrylate (MMA) andn-butyl methacrylate (nBMA)) were examined as comonomers. Proton nuclear magnetic resonance (1H NMR) spectroscopy and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) characterizations of the obtained copolymers revealed that each monomer component was incorporated sufficiently. The thermal stabilities of the resulting copolymers were investigated by dynamic mechanical analysis (DMA), indicating that the glass-transition temperature (Tg) of the copolymers can be widely varied over a relatively high-temperature range by selecting the optimal comonomer. More specifically, theTgvalues of poly(MC-random-EC) (MC/EC molar ratio = 50/50), poly(MC-random-nBC) (MC/nBC molar ratio = 50/50), poly(MC-random-MCin) (MC/MCin molar ratio = 54/46), and poly(nBC-random-MCin) (nBC/MCin molar ratio = 56/44) were 173, 130, 216, and 167 °C, respectively.
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影响因子:
2.8
作者:
K. Ute;Toshiyuki Tarao;T. Kitayama
通讯作者:
K. Ute;Toshiyuki Tarao;T. Kitayama
影响因子:
5.5
作者:
R. Kakuchi;K. Chiba;Keita Fuchise;R. Sakai;T. Satoh;T. Kakuchi
通讯作者:
R. Kakuchi;K. Chiba;Keita Fuchise;R. Sakai;T. Satoh;T. Kakuchi
影响因子:
5.9
作者:
Imada, Motosuke;Takenaka, Yasumasa;Abe, Hideki
通讯作者:
Abe, Hideki
DOI:
10.1039/jr9370001784
发表时间:
1937
期刊:
Journal of The Chemical Society (resumed)
影响因子:
--
作者:
R. Sapiro;R. Linstead;D. Newitt
通讯作者:
D. Newitt
DOI:
--
发表时间:
2019
期刊:
影响因子:
--
作者:
Yasumasa Takenaka;Hideki Abe
通讯作者:
Hideki Abe