林产化学与工业Issue(1)：99-104,6.DOI:10.3969/j.issn.0253-2417.2016.01.014
纳米结晶纤维素改善脲醛树脂胶黏剂游离甲醛的研究
Reduction of Free Formaldehyde Emission from Urea-formaldehyde Resin Adhesive by Use of Modified Nanocrystalline Cellulose
摘要
Abstract
In this study,a modified nanocrystalline cellulose ( M-NCC) was used to reduce the free formaldehyde emission from urea-formaldehyde resin adhesive. M-NCC was prepared by a procedure that Russian larch pulp was hydrolyzed by acid, followed by the modification of 3-(2-aminoethyl)-aminopropylmethyldimethoxysilane (MCPS). The effects of M-NCC on the emission of free formaldehyde from urea-formaldehyde resin adhesive were analyzed. The results indicated that from the TEM images, the length of the nanocrystalline cellulase ( NCC) particles prepared by acid hydrolysis was 100-200 nm,and the diameter was 20-30 nm. Compared with the original cellulose,the crystallinity degree of NCC was improved by 41. 1 %. The wetting property of M-NCC was enhanced by the graft of MCPS. The contact angle between M-NCC and urea-formaldehyde resin adhesive was decreased by 32. 7% when the grafting ratio was 27. 2%. The SEM images showed that the disperse state of M-NCC particles under low concentrations was improved significantly and the dispersity of nano-partides decreased obviously as the M-NCC was 2%. Free formaldehyde was absorbed by the M-NCC and 1. 5% M-NCC led to a 50. 9% decline of the emission of free formaldehyde.关键词
纳米结晶纤维素/改性/脲醛树脂/游离甲醛Key words
nanocrystalline cellulose/modification/urea-formaldehyde resin/free formaldehyde分类
化学化工引用本文复制引用
张浩,蒲俊文,洪亮,朱明..纳米结晶纤维素改善脲醛树脂胶黏剂游离甲醛的研究[J].林产化学与工业,2016,(1):99-104,6.基金项目
河南工程学院轻化工程技术研究中心建设项目(GCZX2013003) （GCZX2013003）
河南省高等学校重点科研项目(15A430019) （15A430019）
