Esterification of wood with citric acid: The catalytic effects of sodium hypophosphite (SHP)

被引：54

作者：

Feng, Xinhao ^{[1
]}

Xiao, Zefang ^{[1
]}

Sui, Shujuan ^{[1
]}

Wang, Qingwen ^{[1
]}

Xie, Yanjun ^{[1
]}

机构：

[1] Northeast Forestry Univ, Coll Mat Sci & Engn, Minist Educ, Key Lab Biobased Mat Sci & Technol, Harbin 150040, Peoples R China

来源：

HOLZFORSCHUNG | 2014年 / 68卷 / 04期

关键词：

catalytic effects; citric acid; mechanical properties; sodium hypophosphite; wood modification; ESTER CROSS-LINKING; FT-IR SPECTROSCOPY; 1,2,3,4-BUTANETETRACARBOXYLIC ACID; POLYCARBOXYLIC ACIDS; COTTON CELLULOSE; NONPHOSPHORUS CATALYSTS; PHYSICAL-PROPERTIES; CARBOXYLIC-ACIDS; WET PERFORMANCE; SCOTS PINE;

D O I：

10.1515/hf-2013-0122

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

Sodium hypophosphite (SHP) has been recognized as the most efficient catalyst in the esterification reaction of cellulosic fabrics with citric acid (CA), but both the high cost and the environmentally harmful property of SHP call for optimization of its application. In this study poplar wood (Populus adenopoda Maxim.) was treated with CA to various weight percent gains (WPGs) and the effect of SHP on the resulting properties of treated wood was investigated. Esterification with CA can occur also in the absence of SHP, as evidenced by the resistance to water leaching of CA. Wood treated with CA alone to 36% WPG exhibited 7% bulking, 50% anti-swelling efficiency, 30% reductions of the modulus of rupture, and 50% lower impact strength. Treatments with CA in the presence of SHP provided wood properties comparable to wood treated with CA alone. Thus the application of SHP can be questioned from the point of view of an economic production and environmental protection.

引用

页码：427 / 433

页数：7

共 45 条

[1]

[Anonymous], 2009, 1939 SAC

[2]

[Anonymous], 2009, 19362 SAC

[3]

[Anonymous], 2009, 1940 SAC

[4] PORE STRUCTURE OF COTTON FABRICS CROSS-LINKED WITH FORMALDEHYDE-FREE REAGENTS [J].