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On the use of cellulose nanowhisker as reinforcement in all‐cellulose composite membrane from corn stalk
Author(s) -
Wu Lishun,
Tian Fangjun,
Sun Junfen
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.50206
Subject(s) - membrane , cellulose , materials science , sulfuric acid , hydrolysis , ultimate tensile strength , stalk , plasticizer , chemical engineering , aqueous solution , polymer chemistry , composite material , chemistry , organic chemistry , biochemistry , horticulture , engineering , metallurgy , biology
All‐cellulose composite (ACC) membranes were prepared with cellulose and cellulose nano whisker (CNW) extracted from corn stalk by using NaOH/thiourea as solvent. CNW was isolated via acid hydrolysis method and the yield, size distribution and morphology of CNW were investigated. ACC Membranes were characterized via SEM, XRD, TGA as well as water flux and were further plasticized with glycerol aqueous solution. The mechanical property and transparency of ACC membranes before and after plasticization were compared. CNW prepared with 63% sulfuric acid for 60 min of hydrolysis time had the biggest ratio of length to diameter and moderate yield. ACC membrane with 5% CNW content had the highest tensile strength and the structure of ACC membranes was observed clearly in SEM images. TGA testing indicated that the initial degradation temperature tended to lower after CNW was introduced into membrane. ACC membrane had good optical transmittance and good flexibility after plasticization.