Preparation and Performance Research of a Novel Acrylic Acid Grafted Starch Water Reducing Agent
CHEN Yuan1,2,3, HE Zhengji3, YANG Jiatian3, HU Huayu4, LIANG Zirong4, LI Qiong3, QIN Yucai3
1 Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, Yulin Normal University, Yulin 537000, Guangxi,China 2 Colleges and Universities Key Laboratory for Efficient Use of Agricultural Resources in the Southeast of Guangxi, Yulin Normal University, Yulin 537000, Guangxi, China 3 College of Chemistry and Food Science, Yulin Normal University, Yulin 537000, Guangxi, China 4 College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
Abstract: By using cassava starch as raw material, acrylic acid as graft monomer and ammonium persulfate as initiator, acrylic acid grafted starch was synthesized in solid phase system. Based on fluidity of cement paste as the evaluation index, the optimal conditions for preparing acrylic acid grafted starch by single factor experiment are as follow: the amount of monomer (accounting for the mass fraction of starch dry basis) 43wt%, the amount of initiator (accounting for the mass fraction of starch dry basis) 20wt%, reaction temperature 60 ℃ and reaction time 3 h. Results of Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscope (SEM) indicated that acrylic acid groups had been introduced into starch molecules successfully where the graft ratio of acrylic acid grafted starch was 40% and the grafting efficiency was 74%. When 0.6wt% acrylic acid grafted starch was added to the cement paste, cement mortar and concrete, the fluidity of cement paste reached 220 mm, with the coagulation time extending from 330 min to 910 min; the water-reducing rate of cement mortar was 18.6%, with the compressive strength (28 d) increasing from 46.7 MPa to 51.9 MPa; the water-reducing rate of concrete reached 17.9%, while the compressive strength (7 d) reached 33.8 MPa. Therefore, the acrylic acid grafted starch has significant water-reducing and retarding effects, and can enhance the compressive strength and delay the speed of the initial hydration reaction of cement, thus contributing to a more compact cement structure.
陈渊, 何正绩, 杨家添, 胡华宇, 梁恣荣, 李琼, 秦毓才. 新型丙烯酸接枝淀粉减水剂的制备及性能研究[J]. 材料导报, 2022, 36(8): 20090155-7.
CHEN Yuan, HE Zhengji, YANG Jiatian, HU Huayu, LIANG Zirong, LI Qiong, QIN Yucai. Preparation and Performance Research of a Novel Acrylic Acid Grafted Starch Water Reducing Agent. Materials Reports, 2022, 36(8): 20090155-7.
1 Li C Z, Feng N Q, Li Y D, et al. Cement and Concrete Research,2005,35(5),867. 2 Ji J W, Tang M J, Lei J J. Technology & Development of Chemical Industry,2016,45(1),16(in Chinese). 季建伟,唐谋金,雷江蛟.化工技术与开发,2016,45(1),16. 3 Deng Y H, Wang T, Qian Y, et al. Journal of Chemical Engineering of Chinese Universities,2016,30(2),477(in Chinese). 邓永红,王婷,钱勇,等.高校化学工程学报,2016,30(2),477. 4 Chang D Y, Chan S Y N, Zhao R P. Construction and Building Mate-rials,1995,9(4),205. 5 Qiu X Q, Jiang X Y, Ouyang X P. Chemical Industry and Engineering Progress,2003,22(4),336(in Chinese). 邱学青,蒋新元,欧阳新平.化工进展,2003,22(4),336. 6 Lei L, Plank J. Cement and Concrete Research,2012,42(1),118. 7 Yang C A, Lei H Q, Wang J N, et al. Applied Chemical Industry,2014,43(9),1656(in Chinese). 杨传安,雷黄清,王建宁,等.应用化工,2014,43(9),1656. 8 Sakai E, Ishda A, Ohta A. Journal of Advanced Concrete Technology,2006,4(2),211. 9 Zhang D F, Ju B Z, Zhang S F, et al. Carbohydrate Polymers,2007,70(4),363. 10 Wu J Y, Sun C J, He H R, et al. New Building Materials,2017,44(8),37(in Chinese). 吴家瑶,孙长江,何红荣,等.新型建筑材料,2017,44(8),37. 11 Yin A P, Guo J Q, Guo J H, et al. New Chemical Materials,2017,45(5),259(in Chinese). 尹爱萍,郭俊卿,郭建红,等.化工新型材料,2017,45(5),259. 12 Xie X L, Tong Z F, Huang Z Q, et al. Journal of Chemical Engineering of Chinese Universities,2008,22(1),44(in Chinese). 谢新玲,童张法,黄祖强,等.高校化学工程学报,2008,22(1),44. 13 Wang T T, Yan Y, Hu Z H, et al. Journal of the Chinese Ceramic Society,2010,38(7),1191(in Chinese). 王田堂,严云,胡志华,等.硅酸盐学报,2010,38(7),1191. 14 Ji L, Guo L M, Zhang B. Textile Auxiliaries,2008(7),15(in Chinese). 季梁,郭腊梅,张斌.印染助剂,2008(7),15. 15 Zhang X D, Liu X, Li W Y. Journal of Applied Polymer Science,2003,89(11),3016. 16 Kittpongpana O S, Sirtthunyalug J, Laneger R. Carbohydrate Polymers,2006,63(1),105. 17 Hu H Y, Liu W D, Shi J, et al. Starch/Starke,2016,68(1-2),151. 18 Huang A M, Li X H, Liang X T, et al. Polymers,2018,10(12),1381. 19 Huang Z Q, Lu J P, Li X H, et al. Carbohydrate Polymers,2007,68(1),128. 20 Gan T, Zhang Y J, Yang M N, et al. Industrial & Engineering Chemistry Research,2018,57(32),10786. 21 Zhao X H, Zhang Y J, Yang M, et al. Polymers,2018,10(8),907. 22 Chen Y, Liao C P, Xie Q J, et al. Food Science and Technology,2017,42(9),254(in Chinese). 陈渊,廖春萍,谢秋季,等. 食品科技,2017,42(9),254. 23 Chen Y, Yang J T, Huang Z Q, et al. Food and Fermentation Industries,2013,39(7),135(in Chinese). 陈渊,杨家添,黄祖强,等.食品与发酵工业,2013,39(7),135. 24 Shu C H, Chen S. Journal of Wuyi University(Natural Science Edition),2006,26(2),67(in Chinese). 舒陈华,陈爽.五邑大学学报(自然科学版),2006,26(2),67. 25 GB 8077-2000《混凝土外加试剂匀质性试验方法》,北京: 中国标准出版社, 2001. 26 GB 1346-2001《水泥标准稠度用水量、凝结时间、安定性检验方法》,北京: 中国标准出版社, 2012. 27 Sun Z P, Luo Q, Wu X Q, et al. New Building Materials,2010,37(9),53(in Chinese). 孙振平,罗琼,吴小琴,等.新型建筑材料,2010,37(9),53. 28 GB/T 17671-1999《水泥胶砂强度检验方法(ISO法)》,北京: 中国标准出版社, 1999. 29 GB/T 50080-2016《普通混凝土拌合物性能试验方法标准》,北京: 中国建筑工业出版社出版, 2017. 30 Gui L, Pan L J, Jiang S T, et al. Academic Periodical of Farm Products Processing,2009(10),75(in Chinese). 桂蕾,潘丽军,姜绍通,等.农产品加工(学刊),2009(10),75. 31 Chen F, Hou G L, Yi C Q, et al. Fine Chemicals,2006(7),711(in Chinese). 程发,侯桂丽,伊长青,等.精细化工,2006(7),711. 32 Zhao P, Yan Y, Hu Z H, et al. China Concrete and Cement Products,2012(7),1(in Chinese). 赵平,严云,胡志华.混凝土与水泥制品,2012(7),1.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2022, Vol. 36 
