文献类型：期刊文献

英文题名：Hydrophobic and oleophilic open-cell foams from in-situ microfibrillation blends of poly(lactic acid) and polytetrafluoroethylene: Selective oil-adsorption behaviors

作者：Wei, Xinyi Meng, Ruijing Bai, Yu'an Liu, Wei Zhou, Hongfu Wang, Xiangdong Xu, Bo

第一作者：Wei, Xinyi

通信作者：Zhou, HF[1];Xu, B[1]

机构：[1]Beijing Technol & Business Univ, Coll Chem & Mat Engn, Beijing Key Lab Qual Evaluat Technol Hyg & Safety, Beijing 100048, Peoples R China;[2]Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang 550003, Peoples R China

第一机构：Beijing Technol & Business Univ, Coll Chem & Mat Engn, Beijing Key Lab Qual Evaluat Technol Hyg & Safety, Beijing 100048, Peoples R China

通信机构：corresponding author), Beijing Technol & Business Univ, Coll Chem & Mat Engn, Beijing Key Lab Qual Evaluat Technol Hyg & Safety, Beijing 100048, Peoples R China.

年份：2023

卷号：227

起止页码：273-284

外文期刊名：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES

收录：;EI(收录号：20240815599691);Scopus(收录号：2-s2.0-85144759663);WOS:【SCI-EXPANDED(收录号:WOS:000909127200001)】；

基金：Acknowledgements This work was supported by the National Natural Science Foundation of China (52263004) , Guizhou Provincial Science and Technology Projects (QianKeHeJiChu-ZK [2022] YiBan179) and the Postgraduate Research Capacity Improvement Program from Beijing Technology and Business University.

语种：英文

外文关键词：Poly(lactic acid); Open-cell foam; Supercritical CO2 foaming

摘要：Confronted with severe water contamination induced by the spillage of oils, seeking oil-selective adsorbent to recover oil from oily wastewater is extremely urgent. In particular, the functionalized polymer foams with open cell structures are highly promising oil-selective adsorbent. Herein, a simple, effective and green method was presented to prepare open-cell poly(lactic acid) (PLA)/polytetrafluoroethylene (PTFE) foams with selective oil adsorption behaviors via melt blending and supercritical CO2 batch foaming technique. The introduction of PTFE had a distinct positive influence on the melt viscoelasticity and crystallization performances of various PLA specimens. The resulted PLA/PTFE4 foam with a volume expansion ratio of 10.17 +/- 0.93 and a cell density of 1.58 x 108 cells/cm3 possessed the highest open-cell content of 90.81 +/- 0.78 %. Meanwhile, PLA/PTFE4 foam revealed oil/water selective adsorption capacity of 1.2-6.1 g/g for various organic solvents and oils. The adsorption capacity of PLA/PTFE4 foam for CCl4 exhibited no significant decrement during ten adsorption desorption cycles. This research offered a guideline for the manufacture of green environmental open-cell polymer foams for oil-selective adsorption.