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KPSCANNaHSO3接枝稻草丙烯酸吸水材料的合成(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2013年05期
Page:
129-133
Column:
研究论文
publishdate:
2013-09-30

Article Info:/Info

Title:
Synthesis of superabsorbent material by grafting copolymerization of rice straw with acrylic acid using KPSCANNaHSO3 as the complex initiator
Article ID:
1000-2006(2013)05-0129-05
Author(s):
Nguyen Minh Tuan FENG Nianjie ZHAI Huamin*
Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing 210037, China
Keywords:
complex initiator rice straw superabsorbent material alkali treatment grafting copolymerization cellulose lignin hemicellulose
Classification number :
TS721
DOI:
10.3969/j.issn.1000-2006.2013.05.025
Document Code:
A
Abstract:
Synthesis and characterization of superabsorbent material was studied by grafting copolymerization of rice straw with acrylic acid. The rice straw was first pretreated with alkali, and then grafted with acrylic acid in the presence of complex initiator consisted of persulfate cerium saltNaHSO3. The results showed that lignin and hemicellulose of rice straw was efficiently removed by alkali treatment, and the ash of rice straw was reduced to 1.8%. Meanwhile, the increased relative amount of cellulose and modified fiber tissue structure were found to be benefit for the subsequent graft reactivity. The synergistic effects of the complex initiation system were intensified when the mass ratio of persulfate/cerium salt/NaHSO3 was 15∶3∶5. The grafting ratio and water absorbency of product was 493% and 350 g/g respectively under the conditions of m(acrylic acid)∶m(rice straw)=8∶1, 70% neutralization degree, 1% crosslinking agent dosage and 60℃ for 3 h.

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Last Update: 2013-09-30