Preparation and Characterization of Vinyltri（2-methoxyethoxy）silane Grafted Ethylene Vinyl Acetate Copolymer

doi:10.19894/j.issn.1000-0518.230086

Chinese Journal of Applied Chemistry ›› 2023, Vol. 40 ›› Issue (10): 1405-1411.DOI: 10.19894/j.issn.1000-0518.230086

• Full Papers • Previous Articles Next Articles

Preparation and Characterization of Vinyltri（2-methoxyethoxy）silane Grafted Ethylene Vinyl Acetate Copolymer

Chun-Bo WANG¹^,², Peng-Bo LIU¹, Zeng-Wen CAO¹(), Guang-Yuan ZHOU¹()

^1.National Laboratory of Clean Energy，Dalian Institute of Chemical Physics，Dalian 116023，China
^2.University of Chinese Academy of Sciences，Beijing 100049，China

Received:2023-04-03 Accepted:2023-07-17 Published:2023-10-01 Online:2023-10-13
Contact: Zeng-Wen CAO,Guang-Yuan ZHOU
About author:zwcao@dicp.ac.cn； gyzhou@dicp.ac.cn
Supported by:
Liaoning Revitalization Talents Program(XLYC2008022)

Abstract

Abstract:

The low hot melt adhesive strength of ethylene vinyl acetate （EVA） as a matrix resin is mainly due to its low cohesive strength and low polarity on the bonding surface. To address this issue， polar vinyltri（2-methoxyethoxy）silane （VT2MES） is grafted onto the EVA main chain through a melt grafting method， resulting in the synthesis of ethylene vinyl acetate grafted with vinyltri（2-methoxyethoxy）silane （EVA-g-VT2MES）. The molecular chain structure of the product is characterized using Fourier transform infrared spectroscopy （FT-IR） and nuclear magnetic resonance spectroscopy （NMR）， indicating that VT2MES hasbeen successfully grafted onto the EVA molecular chain， with the highest grafting rate of 2.37%. Rheology and melt index tests demonstrate an improvement in the cohesive strength of the grafted product. Adhesive films are prepared from EVA and EVA-g-VT2MES， and steel plates are bonded with them. Compared with EVA， the peel strength of EVA-g-VT2MES is increased by up to 75.21%， confirming that melt grafting of VT2MES onto the EVA molecular chain can significantly improve the adhesion strength of the EVA matrix.

Key words: Ethylene-vinyl acetate copolymer, Melt grafting, Graft rate, Cohesive strength, Adhesion strength

CLC Number:

O632

Chun-Bo WANG, Peng-Bo LIU, Zeng-Wen CAO, Guang-Yuan ZHOU. Preparation and Characterization of Vinyltri（2-methoxyethoxy）silane Grafted Ethylene Vinyl Acetate Copolymer[J]. Chinese Journal of Applied Chemistry, 2023, 40(10): 1405-1411.

Figures/Tables 7

Table 1 The nomenclature of EVA-g-VT2MES graft copolymers

Sample	m（V2825）/g	m（VT2MES）/g	m（DCP）/g
V-DC-1	40.000	0.978	0.038
V-DC-2	40.000	1.956	0.038
V-DC-3	40.000	3.912	0.038

Fig.1 FT-IR spectra of EVA and EVA-g-VT2MES

Fig.2 Themolecular formula of EVA-g-VT2MES and the 1H NMR spectra of graft copolymer V-DC-3

Fig.3 Storage modulus （A） and loss modulus （B） of EVA and EVA-g-VT2MES

Fig.4 Peel strength of EVA and EVA-g-VT2MES film sticking iron sheet. Fe-0 represents EVA film， Fe-1 represents V-DC-1 film， Fe-2 represents V-DC-2 film and Fe-3 represents V-DC-3 film

Fig.5 DSC enthalpy curves（A） and TGA curves（B） of EVA and EVA-g-VT2MES

References 14

1	KOSTYUK A V， SMIRNOVA N M， ANTONOV S V， et al. Rheological and adhesion properties of hot-melt adhesives based on hydrocarbon resins and poly（ethylene-vinyl acetate）［J］. Polym Sci Ser A， 2021， 63： 283-295.
2	郭静，相恒学，王倩倩，等. 热熔胶研究进展［J］. 中国胶粘剂， 2010， 19（7）： 54-58.
	GUO J， XIANG H X， WANG Q Q， et al. Research progress in hot melt adhesives［J］. China Adhes， 2010， 19（7）： 54-58.
3	张荣军，律微波. EVA热熔胶改性研究进展［J］. 化学与黏合， 2011， 33（1）： 55-56， 62.
	ZHANG R J， LV W B. Research progress in modification of EVA hot melt adhesive［J］. Chem Adhes， 2011， 33（1）： 55-56， 62.
4	朱万章. EVA热熔胶的主要成分及其对性能的影响［J］. 粘接， 1999（1）： 28-32， 4.
	ZHU W Z. The main components of EVA hot melt adhesive and their impact on properties［J］. Adhes， 1999（1）： 28-32， 4.
5	XIN H， LI Y， PENG Q. Trans-polyisoprene/poly（ethylene-co-vinyl acetate） polymer composites as high-performance triple shape memory materials［J］. Polymers， 2022， 14（24）： 5344.
6	张宪君，王莉，王俊程，等. EVA-g-MAH的制备及作为膜状胶黏剂的初步应用［J］. 塑料， 2021， 50（3）： 147-151.
	ZHANG X J， WANG L， WANG J C， et al. Preparation of EVA-g-MAH and its preliminary application as a membrane adhesive［J］. Plastics， 2021， 50（3）： 147-151.
7	JIANG P， XU H Y， ZHANG W L， et al. Preparation and properties of ethylene-vinyl acetate grafted acrylonitrile［J］. Mater Res Express， 2022， 9（5）： 055304.
8	JIAO C M， WANG Z Z， ZHOU G， et al. Silane grafting and crosslinking of ethylene-octene copolymer［J］. Eur Polym J， 2005， 41（6）： 1204-1211.
9	VARGHESE A M， SINGH S， MUTHUKUMARASWAMY RANGARAI V， et al. Two-dimensional mullite nanostructure： synthesis and reinforcement effect on polypropylene/maleic anhydride graft ethylene vinyl acetate matrix［J］. J Appl Polym Sci， 2019， 136（46）： 48233.
10	MAIDUC H， TRANHUU T， DOVAN C， et al. Effect of maleic anhydride grafted ethylene vinyl acetate compatibilizer on the mechanical， thermal properties and weathering resistance of polyamide 11/bamboo fiber composite［J］. Mater Trans， 2020， 61（8）： 1527-1534.
11	LI N， WU W， MAO G. Effect of modified ethylene vinyl acetate copolymers pour point depressants on flow properties of crude oil and corresponding mechanism analysis［J］. Colloids Surf A， 2021， 630： 127602
12	MUN G A， BEKBASSOV T， BEKSULTANOV Z， et al. Modified graft copolymers based on ethylene vinyl acetate as depressants for waxy crude oil and their effect on the rheological properties of oil［J］. J Pet Sci Eng， 2022， 213： 110298.
13	ZHANG W， YAN W， PAN R， et al. Synthesis of silane-grafted ethylene vinyl acetate copolymer and its application to compatibilize the blend of ethylene-propylene-diene copolymer and silicone rubber［J］. Polym Eng Sci， 2018， 58（5）： 719-728.
14	金世龙，郑斌茹，历娜，等. 乙烯-乙酸乙烯酯共聚物接枝聚合物的合成、表征及应用新进展［J］. 化工进展， 2021， 50（3）： 147-151.
	JIN S L， ZHENG B R， LI N， et al. Recent progress in synthesis， characterization and application of ethylene-vinyl acetate copolymer graft polymers［J］. Chem Ind Eng Prog， 2017， 36（10）： 3757-3764.

[1]	WANG Zhenkun, WU Zhongkui, MIAO Linhui, XU Bing, ZHU Zhe, DAI Siyu. Effect of Silsesquioxane/Modified Ethylene-Vinyl Acetate Copolymer Compounded Pour Point Depressant on Pour Point of Waxy Oil [J]. Chinese Journal of Applied Chemistry, 2020, 37(7): 0-.
[2]	WANG Zhenkun, WU Zhongkui, MIAO Linhui, XU Bing, ZHU Zhe, DAI Siyu. Effect of Silsesquioxane/Modified Ethylene-Vinyl Acetate Copolymer Compounded Pour Point Depressant on Pour Point of Waxy Oil [J]. Chinese Journal of Applied Chemistry, 2020, 37(7): 772-777.
[3]	JIN Mingyue,FU Luxiang,YOU Jichun,Li Yongjin. Preparation and Properties of Ionic Liquid and Ethylene-Vinyl Acetate Copolymer Composites [J]. Chinese Journal of Applied Chemistry, 2015, 32(10): 1146-1152.
[4]	ZHANG Zhenjiang1,2, WAN Dong1,2, XING Haiping1,2, TANG Tao1*. The Effect of Tetramethylthiuram Disulfide on the Heat-induction Melt-grafting of Polypropylene [J]. Chinese Journal of Applied Chemistry, 2011, 28(10): 1130-1134.

Preparation and Characterization of Vinyltri（2-methoxyethoxy）silane Grafted Ethylene Vinyl Acetate Copolymer

RichHTML

PDF

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 7

References 14

Related Articles 4

Recommended Articles

Metrics

Comments