功能性乙基纤维素-松香复合膜的合成与性能表征

doi:10.3969/j.issn.0253-2417.2020.02.005

Abstract

Abstract:

A class of bio-based hybrid membranes named EC-g-MPA-ESO were prepared by the esterification reaction between the epoxidized soybean oil (ESO) and the ethyl cellulose-rosin-based polymer (EC-g-MPA), synthesized by grafting rosin derivative maleopimaric acid (MPA) onto the ethyl cellulose (EC) backbone via esterification reaction. The chemical structure of EC-g-MPA was characterized by FT-IR, ¹H NMR, and UV-Vis spectrophotometer, by which have confirmed the successful preparation of EC-g-MPA. Then, TGA, DSC, UV-Vis spectrophotometer, and tensile test were applied to investigate the thermal stability, curing properties, UV absorption properties, and mechanical properties of bio-based hybrid membrane EC-g-MPA-ESO with different ESO content. The results showed that the bio-based hybrid membrane exhibited UV absorption property. Compared with EC and EC-g-MPA, EC-g-MPA-ESO exhibited low glass transition temperature and excellent toughness. Mechanical test showed that when ESO content was 20% (based on the mass of EC-g-MPA), the blend film shows the best mechanical properties, and tensile strength reaches the maximum value of 12.07 MPa. Cyclic tensile test confirmed that the elastic restitution coefficient of EC-g-MPA-ESO increased with the increase of elongation. As the elongation reached 80%, the elastic restitution coefficient reached 54.6%, indicating that EC-g-MPA-ESO had good elastomer behavior and could be used as a thermoplastic elastomer. The hybrid membrane consists of cellulose matrix and rosin functional groups, and could find potential application in UV absorption and degradable plastic film.

Key words: rosin, ethyl cellulose, epoxidized soybean oil, polymer, hybrid film

CLC Number:

TQ35
TQ326.4

Yuling QIU,Xiaoliang GUO,Chuanwei LU,Chunpeng WANG,Jifu WANG,Fuxiang CHU. Synthesis and Characterization of Functional Ethyl Cellulose-rosin Hybrid Membrane[J]. Chemistry and Industry of Forest Products, 2020, 40(2): 42-48.

Figures/Tables 9

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Table 1

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样品 samples	ESO用量/% ECO dosage	拉伸强度/MPa tensile strength	断裂伸长率/% elongation at break
EC-g-MPA	0	2.08	0.41
EC-g-MPA-5%ESO	5	5.52	1.41
EC-g-MPA-10%ESO	10	6.68	3.75
EC-g-MPA-15%ESO	15	7.54	8.94
EC-g-MPA-20%ESO	20	12.07	60.84
EC-g-MPA-25%ESO	25	8.91	88.31
EC-g-MPA-30%ESO	30	7.01	93.02

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Synthesis and Characterization of Functional Ethyl Cellulose-rosin Hybrid Membrane

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