Effect of Modified Konjac Glucomannan Nanocrystals on Properties of Poly(vinyl alcohol) Film

doi:10.19491/j.issn.1001-9278.2020.05.007

Abstract

Abstract:

Konjac glucomman (KGM) nanocrystals were prepared by a hydrolysis reaction of KGM with sulfuric acid and then was modified by surface grafting with 3?(trimethoxysilylpropyl) octadecylammonium chloride and then by ion?exchanging with nonylphenol polyoxyethylene ether sodium sulfate to obtain a KGM nanocrystal fluid. The poly(vinyl alcohol)?based composite films containing different concentrations of KGM nanocrystals and their fluid were prepared by a solution?casting method, and their structures and properties were investigated by Fourier?transform infrared spectroscopy, transmission electron microscopy, scanning electron microscopy, thermogravimetric analysis, and tensile test. The results indicated that the structure of KGM nanocrystals was not destroyed after surface modification, and their fluid was uniformly dispersed in the PVA matrix. The composite films achieved an improvement in initial decomposition temperature by 23 °C and in tensile strength 34.7 % when 3 wt% of KGM nanocrystal fluid was incoporated.

Key words: konjac glucomman nanocrystal, nanofluid, poly(vinyl alcohol), mechanical property

CLC Number:

TQ325.9

Xiuling CHEN, Shanjun GAO, Chunhui SHEN, Hongsheng QI, Sawen LIU. Effect of Modified Konjac Glucomannan Nanocrystals on Properties of Poly(vinyl alcohol) Film[J]. China Plastics, 2020, 34(5): 38-44.

Figures/Tables 10

Fig.1. Preparation scheme of NKGMf

Fig.2. SEM of KGM and NKGM

Fig.3. XRD patterns of KGM and NKGM

Fig.4. TEM of NKGM and NKGMf

Fig.5. FTIR spectra of NKGM ,DC5700 grafted konjac nanocrystals and NKGMf

Fig.6. TG curves of NKGM and NKGMf

Fig.7. Rheological properties of NKGMf

Fig.8. Mechanical properties of films against different contents of NKGM and NGMGf

Fig.9. SEM of the surface of the composite film with different additions of NKGM and NKGMf

Fig.10. TG curves of PVA/NKGMf composite films

References 15

1	LIN N, HUANG J, DUFRESNE A. Preparation, Pro⁃perties and Applications of Polysaccharide Nanocrystals in Advanced Functional Nanomaterials: a Review[J]. Nanoscale, 2012, 4(11):3 274.
2	尚武林.聚多糖纳米晶的物理及化学改性材料[D]. 武汉：武汉理工大学, 2012.
3	ANGELLIER H, MOLINA⁃BOISSEAU S, LEBRUN L, et al. Processing and Structural Properties of Waxy Maize Starch Nanocrystals Reinforced Natural Rubber[J]. Macromolecules, 2005, 38(9):3 783⁃3 792.
4	PARALIKA S A, SIMONSEN J, LOMBARD J. Poly(vinyl alcohol)/Cellulose Nanocrystal Barrier Membranes[J]. Journal of Membrane Science, 2008, 320(1):248⁃258.
5	魏静, 万玉芹, 王鸿博. 甲壳素纳米晶须/聚乳酸复合纤维膜的制备及表征[J]. 化工新型材料, 2012(11):71⁃73.
	WEI J,WAN Y Q,WANG H B.Preparation and Characterization of Chitin Nano⁃whisker/Ploy(Lactic Acid) Composite Fiber Membrane[J].New Chemical Materials,2012(11):71⁃73.
6	王能，丁恩勇，程时.纳米微晶纤维素表面改性研究[J].高分子学报，2006(8):982⁃987.
	WANG N,DING E Y,CHENG S. Study on Surface Modi⁃fication of Nano⁃microcrystalline Cellulose[J]. Acta Polymerica Sinica,2006(8):982⁃987.
7	KABOORADI A, RIEDL B. Surface Modification of Cellulose Nanocrystals (CNC) by a Cationic Surfactant[J]. Industrial Crops & Products, 2015,56:45⁃55.
8	任丽丽. 淀粉纳米晶的改性及其在热塑性淀粉复合材料中的应用[D].长春：吉林大学,2012.
9	RATCLIFFE I, WILLIAMS P A, VIEBK C, et al. Physicochemical Characterization of Konjac Glucomannan[J]. Biomacromolecules, 2005, 6(4):1 977⁃1 986.
10	ZHANG Y Q, XIE B J, GAN X. Advance in the App⁃lications of Konjac Glucomannan and its Derivatives[J]. Carbohydrate Polymers, 2005, 60(1):27⁃31.
11	王婧, 苑会林, 马沛岚,等. 聚乙烯醇薄膜的生产及应用现状与展望[J]. 塑料, 2005, 34(2):12⁃17.
	WANG J, YUAN H L, MA P L, et al. Production,App⁃lications and Development of PVA Films[J]. Plastic,2005,34(2):12⁃17.
12	RESCIGNANO N, FORTUNATI E, MONTESANO S, et al. PVA Bio⁃nanocomposites: a New Take⁃off Using Cellulose Nanocrystals and PLGA Nanoparticles[J]. Carbohydrate Polymers, 2014, 99:47⁃58.
13	DENG Q Y, LI J, YANG J, et al. Optical and Flexible α⁃chitin Nanofibers Reinforced Poly(vinyl alcohol) (PVA) Composite Film: Fabrication and Property[J]. Composites Part A: Applied Science and Manufacturing, 2014, 67:55⁃60.
14	高山俊, 黄锦, 申丹. 魔芋葡甘聚糖纳米晶的制备[J]. 化学与生物工程, 2009(6):62⁃65.
	GAO S J, HUANG J, SHEN D. Preparation of Konjac Glucomannan Nanocrystals by Acid Hydrolysis[J]. Chemistry & Bioengineering,2009(6):62⁃65.
15	陈烨,纪俊玲,李海乐,等.3⁃(三甲氧基硅烷基)丙基二甲基十二烷基氯化铵的合成及其抗菌性能[J].常州大学学报(自然科学版),2010,22(2):10⁃14.
	CHEN Y,JI J L,LI H L, et al. Synthesis and Antibacterial Property of 3⁃(Trimethoxysiyl) Propyldimethydodecyl Ammonium Chloride[J].Journal of Changzhou University(Natural Science Edition),2010,22(2):10⁃14.

[1]	YU Changyong, XIN Zhong. Effect of α/β complex nucleating agent based on hexahydrophthalate on properties of polypropylene [J]. China Plastics, 2022, 36(7): 121-128.
[2]	TAN Liqin, LIU Weiqu, LIANG Liyan, WANG Shuo, FENG Zhiqiang, LIN Jiaming. Preparation and performance of epoxy resin modified with mercaptan polysiloxane [J]. China Plastics, 2022, 36(7): 21-29.
[3]	XU Jie, ZHONG Jinfu, TONG Xiaoqian, LI Guangfu, FU Dongliang, LI Chengcheng. Preparation and performance of carboxyl⁃terminated tannic acid/gallic acid⁃based epoxy composite [J]. China Plastics, 2022, 36(7): 44-50.
[4]	ZHOU Shuyi, ZHU Min, LIU Yiying, CAO Shuhui, CAI Qixuan, NIE Hui, ZHANG Yuxia, ZHOU Hongfu. Research progress in polymer⁃based hemostatic materials [J]. China Plastics, 2022, 36(7): 74-84.
[5]	LI Kaize, XIN Yong. Properties of thermoplastic polyurethane composites modified with carbon nanotubes [J]. China Plastics, 2022, 36(6): 1-5.
[6]	LIU Wei, WU Xian, CHEN Xiaocheng, CHENG Xiaoqiong, ZHANG Chun. Effect of carboxylate fillers on mechanical， conductive， and sensing performance of PVA/CNF hydrogel [J]. China Plastics, 2022, 36(6): 16-23.
[7]	WANG Shuai, ZHANG Yudi, YANG Fukai, XU Xinyu. Preparation and properties of polyimide/multi⁃walled carbon nanotubes composite foams [J]. China Plastics, 2022, 36(6): 39-45.
[8]	WANG Jinye, TANG Bohu, YANG Lining, XIE Meng, GUO Zechao, YANG Guang. Study on multi⁃jet⁃fusion forming process of PA12 parts [J]. China Plastics, 2022, 36(6): 81-86.
[9]	SUN Wenbo, XIN Chunling, HE Yadong, ZHAI Yujiao, YAN Baorui. Influence of micro⁃foaming injection molding process on cell structure of glass⁃fiber⁃reinforced PBT products [J]. China Plastics, 2022, 36(5): 1-7.
[10]	WANG Ke, LONG Chunguang. Mechanical and tribological properties of ultra⁃high molecular weight polyethylene/sepiolite fiber composites [J]. China Plastics, 2022, 36(5): 19-23.
[11]	CHEN Sheng, LIANG Yingchao, WU Fangjuan, FANG Hui, FAN Xinfeng, CHEN Hui, WANG Yonggang. Preparation and interfacial modification of polyamide 6/bidirectional warp⁃knitted glass fiber composites [J]. China Plastics, 2022, 36(5): 24-28.
[12]	LI Fujie, QI Bin, XU Huating, WANG Limei. Preparation and properties of chitosan/polyvinyl alcohol/snail mucus composite films [J]. China Plastics, 2022, 36(5): 53-61.
[13]	HE Hezhi, XU Li, YANG Yike. Effect of prestress on mechanical properties of PC/CF laminates [J]. China Plastics, 2022, 36(4): 1-5.
[14]	LI Suyuan, LIU Huipeng, GONG Shun, HUANG Guotao, LI Yucai, WU Xin, DENG Jianping, PAN Kai. Preparation and characterization of EVA foaming materials modified with thermoplastic polyamide elastomer [J]. China Plastics, 2022, 36(4): 6-14.
[15]	ZHANG Jiufu, LUO Kaiqiang, XU Jun, GUO Baohua. Study on comprehensive properties and influencing factors of long glass fiber reinforced PA66 composites [J]. China Plastics, 2022, 36(3): 1-8.