Fabrication of thermo-sensitive lignocellulose hydrogels with switchable hydrophilicity and hydrophobicity through an SIPN strategy.
Fabrication of thermo-sensitive lignocellulose hydrogels with switchable hydrophilicity and hydrophobicity through an SIPN strategy.
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通过 SIPN 策略制备亲水性和疏水性可切换的热敏木质纤维素水凝胶
DOI:
10.1039/c9ra05575d
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发表时间:
2019-09-18
期刊:
影响因子:
3.9
通讯作者:
Cao, Yunfeng
中科院分区:
文献类型:
--
作者:
Xia, Jianyu;Liu, Zhulan;Chen, Yan;Wang, Zhiguo;Cao, Yunfeng
Herein, thermo-sensitive lignocellulose hydrogels with varying lignin contents were fabricated with N-isopropylacrylamide (NIPAAm) by a semi-interpenetrating polymer network (SIPN) strategy using a LiCl/DMSO solvent system. Soda lignin mixed with the lignocellulose/LiCl/DMSO solution was also used to prepare the composite hydrogels, and the influence of the existential state of lignin on the hydrogel properties was analyzed objectively. The SIPN hydrogels exhibited more favorable mechanical properties due to the physical entanglement of poly-NIPAAm and lignocellulose. The presence of externally added lignin in the composite hydrogels is beneficial for mechanical improvement. Both the mechanical properties and the morphologies of the SIPN hydrogels can be tuned by varying the existential state and content of lignin. Furthermore, the prepared SIPN hydrogels showed rapid conversion from being hydrophilic at 20 °C to being hydrophobic at 45 °C. All SIPN hydrogels exhibited obvious oil absorbency in an oil/water mixture at 45 °C. Moreover, the different lignin existential states in the hydrogels resulted in different lower critical solution temperatures (LCST). This study provides a feasible route to produce reinforced thermo-sensitive hydrogels and develops a method for tailoring the morphology and the absorption properties of hydrogels by controlling the existential state and content of lignin.
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影响因子:
9.5
作者:
Lei, Zhiwen;Zhang, Guangzhao;Wang, Chaoyang
通讯作者:
Wang, Chaoyang
DOI:
10.1007/s10856-007-3188-1
发表时间:
2008-05-01
影响因子:
3.7
作者:
Bajpai, A. K.;Mishra, Abhilasha
通讯作者:
Mishra, Abhilasha
影响因子:
8.4
作者:
Li, Hui;Sun, Jiao-Tong;He, Chaobin
通讯作者:
He, Chaobin
影响因子:
5.9
作者:
Liu, Zhulan;Wu, Jinxiu;Wang, Zhiguo
通讯作者:
Wang, Zhiguo
影响因子:
4.6
作者:
Rasool, Nadia;Yasin, Tariq;Akhter, Zareen
通讯作者:
Akhter, Zareen