Effect of fiber modification with 3-isopropenyl-dimethylbenzyl isocyanate (TMI) on the mechanical properties and water absorption of hemp-unsaturated polyester (UPE) composites

被引：15

作者：

Liu, Wendi ^{[1
]}

Chen, Tingting ^{[1
]}

Qiu, Renhui ^{[1
]}

机构：

[1] Fujian Agr & Forestry Univ, Coll Mat Engn, Fuzhou 350002, Fujian Province, Peoples R China

来源：

HOLZFORSCHUNG | 2014年 / 68卷 / 03期

基金：

中国国家自然科学基金;

关键词：

composites; hemp fibers; mechanical properties; surface modification; water absorption; 3-isopropenyl-dimethylbenzyl isocyanate (TMI); COUPLING AGENTS; POLYPROPYLENE COMPOSITES; SURFACE-TREATMENT; CELLULOSE; BIOCOMPOSITES; PLASMA;

D O I：

10.1515/hf-2013-0104

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

Hemp fibers were modified with 3-isopropenyl-dimethylbenzyl isocyanate (TMI), in presence of dibutyltin dilaurate (DBT) as a catalyst. Then reinforced hemp-unsaturated polyester (UPE) composites were prepared with modified fibers by means of hand lay-up compression molding. The fiber treatments significantly increased the tensile strength (TS), flexural strength (FS), and water resistance of the resulting composites, while their flexural modulus (FM) was not influenced. The tensile-fractured surfaces of the composites were observed by SEM and the images revealed that fiber treatments significantly improved the interfacial adhesion between hemp fibers and UPE resins. FT-IR spectra and X-ray photoelectron spectroscopy (XPS) analysis indicated that the treated-fibers were partly covalently bound to TMI.

引用

页码：265 / 271

页数：7

共 24 条

[1]

Chen TT, 2013, BIORESOURCES, V8, P2780

[2]

DEXTER RW, 1986, J COATING TECHNOL, V58, P43

[3] Biocomposites reinforced with natural fibers: 2000-2010 [J].

Faruk, Omar ;

Bledzki, Andrzej K. ;

Fink, Hans-Peter ;

Sain, Mohini .

PROGRESS IN POLYMER SCIENCE, 2012, 37 (11) :1552-1596

[4] Blocked diisocyanates as reactive coupling agents:: Application to pine fiber-polypropylene composites [J].

Girones, J. ;

Pimenta, M. T. B. ;

Vilaseca, F. ;

Carvalho, A. J. F. ;

Mutje, P. ;

Curvelo, A. A. S. .

CARBOHYDRATE POLYMERS, 2008, 74 (01) :106-113

[5] Blocked isocyanates as coupling agents for cellulose-based composites [J].

Girones, J. ;

Pimenta, M. T. B. ;

Vilaseca, F. ;

de Carvalho, A. J. F. ;

Mutje, P. ;

Curvelo, A. A. S. .

CARBOHYDRATE POLYMERS, 2007, 68 (03) :537-543

[6] Effect of surface modification of beech wood flour on mechanical and thermal properties of poly (3-hydroxybutyrate)/wood flour composites [J].

Gregorova, Adriana ;

Wimmer, Rupert ;

Hrabalova, Marta ;

Koller, Martin ;

Ters, Thomas ;

Mundigler, Norbert .

HOLZFORSCHUNG, 2009, 63 (05) :565-570

[7] Investigation on the compatibilizing effect of m-isopropenyl-α,α-dimethylbenzyl isocyanate grafted polypropylene on polypropylene and wood flour composites [J].

Guo, Chuigen ;

Li, Liping ;

Wang, Qingwen .

WOOD SCIENCE AND TECHNOLOGY, 2012, 46 (1-3) :257-270

[8] Mechanism of tin(IV)-catalysed urethane formation [J].

Houghton, RP ;

Mulvaney, AW .

JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1996, 518 (1-2) :21-27

[9] Reproducible XPS on biopolymers: cellulose studies [J].

Johansson, LS ;

Campbell, JM .

SURFACE AND INTERFACE ANALYSIS, 2004, 36 (08) :1018-1022

[10] Are natural fiber composites environmentally superior to glass fiber reinforced composites? [J].

Joshi, SV ;

Drzal, LT ;

Mohanty, AK ;

Arora, S .

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2004, 35 (03) :371-376

← 1 2 3 →