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首页> 外文期刊>Journal of Applied Polymer Science >Influence of glutaraldehyde on the performance of a lignosulfonate/chitosan-based medium density fiberboard adhesive
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Influence of glutaraldehyde on the performance of a lignosulfonate/chitosan-based medium density fiberboard adhesive

机译：戊二醛对木质素磺酸盐/壳聚糖的介质纤维板粘合剂的影响

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摘要

A lignosulfonate/chitosan-based medium density fiberboard (MDF) adhesive has been prepared using glutaraldehyde as crosslinking agent. Optimization of glutaraldehyde/chitosan mass ratio was carried out based on characterization details involving MDFs' mechanical and dimensional performances analysis, Fourier transform infrared spectroscopy, thermogravimetric analysis, and X-ray diffraction. The addition of glutaraldehyde improved the mechanical properties of the MDF significantly, while it negatively affected the dimensional properties. The MDFs using lignosulfonate/chitosan-glutaraldehyde adhesives (LS/CS-Glu) with glutaraldehyde/chitosan mass ratios in the range of 0.25-0.75 fulfilled the Chinese national standard for MDF. Chitosan was crosslinked with self-polymerized glutaraldehyde through CN linkages which resulted in the reduction of the amide bonds and hydrogen bonds between chitosan and lignosulfonate. The proposed LS/CS-Glu adhesives can be a promising candidate for traditional MDF adhesives which contain formaldehyde. (c) 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45870.
机译：使用戊二醛作为交联剂制备了基于木质素磺酸盐/壳聚糖的培养基密度纤维板（MDF）粘合剂。基于涉及MDFS机械和尺寸性能分析，傅里叶变换红外光谱，热重分析和X射线衍射的表征细节进行戊二醛/壳聚糖质量比的优化。添加戊二醛的加入显着改善了MDF的机械性能，同时对尺寸特性产生负面影响。使用Lignosulfonate /壳聚糖 - 戊二醛粘合剂（LS / CS-Glu）的MDF在0.25-0.75的范围内与戊二醛/壳聚糖质量比率达到MDF的中国国家标准。通过CN键将壳聚糖与自聚合戊二醛交联，导致壳聚糖和木质素磺酸盐之间的酰胺键和氢键的减少。所提出的LS / CS-Glu粘合剂可以是含有甲醛的传统MDF粘合剂的有希望的候选者。 （c）2017 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2018,135,45870。

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