A rheological study on non-rubber component networks in natural rubber
A rheological study on non-rubber component networks in natural rubber
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天然橡胶中非橡胶组分网络的流变学研究
DOI：
10.1039/c5ra07428b
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发表时间：
2015-10
期刊：
影响因子：
--
通讯作者：
Jing Zheng
中科院分区：
文献类型：
--
作者：
Lili Xu;Cheng Huang;Mingchao Luo;Wei Qu;Han Liu;Zhewei Gu;Liumei Jing;Guangsu Huang;Jing Zheng
磷脂和蛋白质作为主要的非橡胶组分被分别去除，以单独研究它们对橡胶的结构和性能的影响。采用傅里叶变换红外光谱（FTIR）和1H核磁共振光谱（1H-NMR）对化学结构和残留非橡胶组分进行表征。流变学研究和应力松弛测量用于研究非橡胶组分在天然网络中发挥的作用。流变学研究表明，天然橡胶（NR）和脱蛋白天然橡胶（DPNR）在170 °C下表现出相似的动态模量。NR和DPNR在不同温度下的货车Gurp-Palmen（vGP）曲线不重合以及vGP曲线的形状证明长链支化主要由磷脂构成。室温下的应力松弛测量结果与麦克斯韦模型拟合表明，NR的松弛曲线经历了一个快速下降，然后达到58%的平衡应力保持率，这是DPNR的约3倍，表明NR中的蛋白质有助于室温下的网络结构。结合分子动力学研究，提出了非橡胶网络中蛋白质和磷脂的相互作用。
Phospholipids and proteins were separately removed as the main non-rubber components to individually study their effect on the structure and properties of the rubber. Fourier Transform Infrared Spectroscopy (FTIR) and 1H nuclear magnetic resonance spectroscopy (1H-NMR) were used to characterize the chemical structure and the residual non-rubber component. A rheology study and stress relaxation measurements were used to study the role that non-rubber components play in natural networks. A rheological study showed that natural rubber (NR) and deproteinized natural rubber (DPNR) exhibited similar dynamic modulus at 170 °C. The lack of superposition in van Gurp–Palmen (vGP) curves at different temperatures for NR and DPNR, together with the shape of vGP curves, proved that long chain branching was mainly constructed by phospholipids. Stress relaxation measurements at room temperature were fitted with the Maxwell model and showed that the NR relaxation curve underwent a quick decrease and then came to an equilibrium stress retention of 58%, which is about 3 times higher than that of DPNR, indicating that proteins in NR contributed to the network structure at room temperature. Combining molecular dynamic studies, the interaction of proteins and phospholipids in non-rubber networks was proposed.
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影响因子：
3.2
作者：
Chandy Kim;M. Morel;J. S. Beuve;S. Guilbert;F. Bonfils
通讯作者：
Chandy Kim;M. Morel;J. S. Beuve;S. Guilbert;F. Bonfils
影响因子：
0.4
作者：
L. Tarachiwin;Yasuyuki Tanaka;J. Sakdapipanich
通讯作者：
L. Tarachiwin;Yasuyuki Tanaka;J. Sakdapipanich
影响因子：
3
作者：
F. Zulli;L. Andreozzi;E. Passaglia;S. Augier;M. Giordano
通讯作者：
F. Zulli;L. Andreozzi;E. Passaglia;S. Augier;M. Giordano
DOI：
10.1063/1.3604477
发表时间：
2011-07
期刊：
--
影响因子：
--
作者：
V. H. Rolón-Garrido;Jinji Luo;M. Wagner
通讯作者：
V. H. Rolón-Garrido;Jinji Luo;M. Wagner
DOI：
10.1122/1.549300
发表时间：
1973-03
期刊：
--
影响因子：
--
作者：
S. Onogi;Takayoshi Matsumoto;Yoshiro Warashina
通讯作者：
S. Onogi;Takayoshi Matsumoto;Yoshiro Warashina