论文部分内容阅读
选用密粘褶菌(Gloeophyllum trabeum(Pers.)Murrill)对杉木(Cunninghamia lanceolata(Lamb.)Hook.)木材进行生物性降解,研究不同降解时间对杉木木材化学成分、结晶度、微力学性能和微观形态的影响。结果表明,密粘褶菌不降解杉木木材的木质素,其中边材综纤维素、纤维素和半纤维含量在6周分别降低了6.91%、4.07%和13.34%;心材综纤维素、纤维素和半纤维含量在6周分别降低了6.84%、4.09%和12.97%。木腐菌处理后,杉木木材纤维素结晶度均有所降低;杉木的抗弯强度和抗弯弹性模量均呈现减小的趋势,18周时降到最低,杉木边材抗弯强度减少了46.17%,抗弯弹性模量减小了29.66%,心材抗弯强度减少了53.74%,抗弯弹性模量减少了47.74%。
The biodegradation of Cunninghamia lanceolata (Lamb.) Hook. Was studied using Gloeophyllum trabeum (Pers.) Murrill. The effects of different degradation time on the chemical composition, crystallinity, micromechanics and microstructure of Chinese fir wood The impact of morphology. The results showed that Myceliophthora mucilaginosus did not degrade the lignin of Chinese fir wood, in which the content of holocellulose, cellulose and hemicellulose in the sapwood decreased by 6.91%, 4.07% and 13.34% respectively at 6 weeks. The content of the holocellulose, cellulose And half-fiber content decreased by 6.84%, 4.09% and 12.97% at 6 weeks respectively. After wood rot fungi, the crystallinity of Cunninghamia lanceolata wood was reduced; the flexural strength and flexural modulus of Cunninghamia lanceolata showed a decreasing trend, the lowest was at 18 weeks, the bending strength of Chinese fir wood was reduced 46.17%, the flexural modulus decreased by 29.66%, the heartwood flexural strength decreased by 53.74% and the flexural modulus decreased by 47.74%.