Structure and physical properties of poly(lactic acid) and cyclodextrin composite
Structure and physical properties of poly(lactic acid) and cyclodextrin composite
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聚乳酸与环糊精复合材料的结构与物理性能
DOI：
10.1007/s10847-018-0859-0
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发表时间：
2018
影响因子：
2.3
通讯作者：
Keiko Takahashi
中科院分区：
文献类型：
--
作者：
T. Yamanobe;Hayata Takeda;Y. Takada;Daisuke Nagai;M. Yoneyama;H. Uehara;Keiko Takahashi
研究了环糊精（CD）和甲基化环糊精（Me-CD）的加入对聚乳酸（PLLA）结构和力学性能的影响。制备了α、β和γ-环糊精（α-CD）与聚乳酸（PLLA）的包合物。通过~（13）CNMR化学位移和α、β和γ-CD/PLLA IC的峰数证实了IC的形成。将10%的α、β和γ-CD/PLLA IC与PLLA混合并形成膜。拉伸试验表明，薄膜的断裂应变提高了350%。将Me-CD与PLLA共混，制备成膜。膜的断裂应变可达250%，其中Me-γ-CD 10的添加效果最大。从DSC测量中，观察到一个熔融峰，并且随着Me-CD量的增加，峰向较低温度移动。这些结果表明Me-CD在PLLA中分布均匀。Me-α，β和γ-CD 50的固体NMR谱出现宽峰，移动的组分的分子迁移率增加。因此，Me-α、β和γ-CD不形成IC，而是作为PLLA的增塑剂。
The addition effects of cyclodextrin (CD) and methylated cyclodextrin (Me-CD) on the structure and mechanical properties of PLLA were investigated. Inclusion complexes (IC) of α, β and γ-CD and PLLA were prepared. The formation of IC was confirmed from13C NMR chemical shifts and the number of peaks for α, β and γ-CD/PLLA IC. 10% of α, β and γ-CD/PLLA IC were mixed with PLLA and formed into films. The tensile test of the obtained films revealed the breaking strain is improved up to 350%. Me-CD was mixed with PLLA and prepared into films. The breaking strain of the films reached up to 250% and the addition effect was largest for Me-γ-CD10. From DSC measurements, one melting peak was observed and the peak moved to lower temperature as the amount of Me-CD increased. These results indicate Me-CD distributes homogeneously in PLLA. Solid state NMR of Me-α, β and γ-CD50 gave broad peaks and the molecular mobility of the mobile component increased. Therefore, Me-α, β and γ-CD do not form IC, but act as the plasticizer for PLLA.
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DOI：
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发表时间：
2007
期刊：
影响因子：
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作者：
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通讯作者：
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影响因子：
4.6
作者：
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通讯作者：
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DOI：
10.1021/jp709782g
发表时间：
2008-04
期刊：
The journal of physical chemistry. B
影响因子：
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作者：
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DOI：
--
发表时间：
2006
期刊：
影响因子：
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作者：
Masaki Kakiage;Miho Sekiya;Hiroki Uehara;Takeshi Yamano be;Tadashi Komoto;Jun-ichi Suwa;Hiroki Uehara;Masaki Kakiage;Takashi Morioka;Jun-ichi Suwa;Hiroki Uehara;Masaki Kakiage;Takashi Morioka
通讯作者：
Takashi Morioka
影响因子：
4.6
作者：
Kakiage, Masaki;Sekiya, Miho;Uehara, Hiroki
通讯作者：
Uehara, Hiroki