Diblock Copolymers of Cellulose and Poly(methyl methacrylate) Initiated by Radicals Produced by Mechanical Scission of Cellulose
Diblock Copolymers of Cellulose and Poly(methyl methacrylate) Initiated by Radicals Produced by Mechanical Scission of Cellulose
复制标题
由纤维素机械断裂产生的自由基引发的纤维素和聚甲基丙烯酸甲酯的二嵌段共聚物
DOI：
10.1021/bk-2012-1107.ch007
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
and T. Iwata
中科院分区：
文献类型：
--
作者：
M. Sakaguchi;T. Ohura;and T. Iwata
细菌纤维素（BC）和聚甲基丙烯酸甲酯（BC-block-PMMA）的二嵌段共聚物是通过在甲基丙烯酸甲酯（MMA）存在下在真空中77 K下对BC进行机械断裂而产生的。MMA的自由基聚合是由BC的链端型自由基（BC机械自由基）引发的，而BC的链端型自由基是通过BC的d-1,4糖苷键的机械断裂而产生的。 BC 表面覆盖有 PMMA 链。此外，以类似的方式制备微晶纤维素(MCC)和PMMA的二嵌段共聚物(MCC-block-PMMA)。 MCC纳米颗粒被PMMA链完全覆盖，即得到MCC核和PMMA壳纳米颗粒。将核/壳纳米颗粒分散在氯仿中，形成光学透明的液体。氯仿中核/壳纳米粒子的平均直径估计为52 nm。通过ESR、FTIR、1H NMR、GPC和DLS光谱对颗粒进行了研究。
A diblock copolymer of bacterial cellulose (BC) and poly(methyl methacrylate) (BC-block-PMMA) was produced by the mechanical fracture of BC in the presence of methyl methacrylate (MMA) in vacuum at 77 K. The radical polymerization of MMA was initiated by chain-end-type radicals of BC (BC mechano-radicals) that were produced by mechanical scission of d-1,4 glycosidic linkages of BC. The BC surface was covered with PMMA chains. Furthermore, a diblock copolymer of microcrystalline cellulose (MCC) and PMMA (MCC-block-PMMA) was produced in a similar way. The MCC nanoparticles were fully covered with PMMA chains,i.e., MCC core and PMMA shell nanoparticles were obtained. The core/shell nanoparticles were dispersed in chloroform, and resulted in an optically transparent liquid. The average diameter of the core/shell nanoparticles in chloroform was estimated to be 52 nm. The particles were studied by ESR, FTIR,1H NMR, GPC and DLS spectroscopy.
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影响因子：
5.5
作者：
Sakaguchi, Masato;Yamamoto, Katsuhiro;Iwamura, Takeru
通讯作者：
Iwamura, Takeru
二维 J 光谱：多糖的质子 NMR。
影响因子：
5.5
作者：
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通讯作者：
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影响因子：
1.7
作者：
Sasai, Y;Yamauchi, Y;Kuzuya, M
通讯作者：
Kuzuya, M
影响因子：
6.2
作者：
M. Sakaguchi;T. Ohura;T. Iwata;Shuhei Takahashi;S. Akai;Toshiyuki Kan;H. Murai;M. Fujiwara;O. Watanabe;Mamiko Narita
通讯作者：
M. Sakaguchi;T. Ohura;T. Iwata;Shuhei Takahashi;S. Akai;Toshiyuki Kan;H. Murai;M. Fujiwara;O. Watanabe;Mamiko Narita
影响因子：
5.5
作者：
Sakaguchi, M;Yamamoto, K;Shimada, S
通讯作者：
Shimada, S