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羧甲基纤维素接枝两性高吸水树脂的制备工艺(PDF)

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

Issue:
2007年02期
Page:
27-31
Column:
研究论文
publishdate:
2007-02-20

Article Info:/Info

Title:
Synthesis of Amphoteric Superabsorbent Polymers Modified by Carboxymethyl Cellulose
Article ID:
1000-2006(2007)02-0027-05
Author(s):
WANG Dan SONG Zhan-qian SHANG Shi-bin*
Institute of Chemical Industry of Forest Products, CAF; Key and Open Lab on Forest Products, Nanjing 210042, China
Keywords:
Amphoteric superabsorbent polymer Carboxymethyl cellulose Graft copolymerization
Classification number :
TQ351
DOI:
10.3969/j.jssn.1000-2006.2007.02.007
Document Code:
A
Abstract:
Superabsorbent polymers (SAP) were made from carboxymethyI cellulose (CMC), acrylic acid (AA), acrylamide (AM). and [2- (methylacryloyloxy) ethyl]trimethylammonium chloride (DMC.) through graft copolymerization’. The factors affecting the water-absorbent capacity of SAPs, such as monomers ratio, CMC dosage, content of initiator and crosslinking agent, and neutralization degree of AA, were investigated and discussed in detail. The optimal conditions were found to be as follows: m(AA):m(AM):m(DMC)=1.86: 1.00 : 0. 31; neutralization degree of AA, 75%; CMC dosage, 5%; initiator content, 2. 5%; crosslinking agent content, 0. 1%, reaction temperature, 60 ℃; reaction time, 45 rain. Amphoteric SAPs, with the absorbent capacity of 1 503 times their own weight in distilled water and 165 times in 0.9% salt solution under optimized synthesis condition, were obtained.

References

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Last Update: 2013-05-20