兩性水膠的合成與對水泥砂漿試體水分散失的影響

黃宗瀚

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兩性水膠的合成與對水泥砂漿試體水分散失的影響

黃宗瀚 , Masters　　Advisor：許貫中　　

繁體中文

高吸水性水膠；兩性；合成半交互穿插網狀結構；自養護劑； superabsorbent hydrogel ； zwitterionic ； semi-interpenetrating network ； self-curing agent

Abstract │ Reference (40) │ Altmetrics

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In this research, two kind of hydrogel, i.e., zwitterionic hydrogel PAMD and semi-interpenetrating polymer network hydrogel PAsp/PAM, have been synthesized. First, DAAE was prepared from 2-(Dimethylamino) ethyl acrylate and sodium chloroacetate. Secondly, PAMD was prepared from Acrylamide and DAAE by free-radical polymerization. PSI was prepared from aspartic acid and phosphoric acid, PAsp was prepared from PSI by hydrolysis, PAsp/PAM was prepared from Acrylamide and PAsp. The effect of MBA, APS, monomer ratio and hydrolysis time on the swelling ratio of hydrogel were investigated. The effect of hydrogel in cement paste on the water retention, humidity and compressive strength was studied. 
  The results indicate that the maximum water absorbency of PAMD(DAAE : AM = 1 : 1；APS = 0.8 mol%；MBA = 0.5 mol%)is 396 g/g in deionized water and 42 g/g, 31 g/g in 0.1M NaCl, 0.1M CaCl2 solution. The optimum hydrolyzed time is 6 hr, it can improve the water absorbency of PAMD 473 g/g in deionized water and 81 g/g in 0.1M NaCl solution. The maximum water absorbency of PAsp/PAM(PAsp : AM = 1 : 1；APS = 0.8 mol%；MBA = 0.5 mol%)is 92 g/g in deionized water and 40 g/g, 26 g/g in 0.1M NaCl, 0.1M CaCl2 solution. The optimum hydrolyzed time is 6 hr, it can improve the water absorbency of PAsp/PAM 405 g/g in deionized water and 85 g/g in 0.1M NaCl solution.
  The test on mortar containing 0.1% PAMD and 0.2% PAsp/PAM showed that the water retention, relative humidity and compressive strength were slightly higher than the control.

Reference ( 40 ) 〈TOP〉

2. P. Lanthong, R. Nuisin, S. Kiatkamjornwong, “Graft copolymerization, characterization, and degradation of cassava starch-g-acrylamide/itaconic acid superabsorbents”, Carbohydrate Polymers 66 (2006) 229–245.
連結：
3. Ji Zhang, Kun Yuan, Yun-Pu Wang, Sheng-Jiu Gu, Sheng-tang Zhang, “Preparation and properties of polyacrylate/bentonite superabsorbent hybrid via intercalated polymerization”, Materials Letters 61 (2007) 316–320.
連結：
4. Tse-Ying Liu, San-Yuan Chen, Yi-Ling Lin, Dean-Mo Liu, “Synthesis and Characterization of Amphiphatic Carboxymethyl-hexanoyl Chitosan Hydrogel : Water-Retention Ability and Drug Encapsulation”, Langmuir 22 (2006) 9740-9745.
連結：
5. Chen Yu, Tan Hui-min, “Crosslinked carboxymethylchitosan-g-poly(acrylic acid) copolymer as a novel superabsorbent polymer”, Carbohydrate Research 341 (2006) 887–896.
連結：
7. Shimei Xu, Liqin Cao, Ronglan Wu, Jide Wang, “Salt and pH Responsive Property of a Starch-Based Amphoteric Superabsorbent Hydrogel with Quaternary Ammonium and Carboxyl Groups (II)”, Journal of Applied Polymer Science 101 (2006) 1995–1999.
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