研究确定,浆中结晶纤维素含量取决于木素脱出程度并随着木素含量的降低而增加。
The content of the crystalline fraction in lignocellulose depends on the lignin removal and increases with the decrease of the lignin content.
研究三醋酸纤维素和二醋酸纤维素的结晶结构和热学性能。
Crystalline structure and thermal property of cellulose triacetate and cellulose diacetate were studied.
在纤维素的结晶区和排列高度有序的区域内,纤维素分子结合得比较紧密,树脂不能进入。
In the regions of the cellulose that are highly ordered and crystalline, the cellulose molecules are bound firmly together and cannot be penetrated by the resins.
研究表明,H3BO3与杉木粉中的羟基发生了缩合反应,纤维素的结晶被破坏;
The results showed that hydroxyl groups of H3BO3 reacted with the hydroxyl groups of fir powder, and thus the crystalline phase of cellulose was destroyed.
根据分解后的图谱计算出纤维素相对结晶度、晶区大小等参数。
Relative crystallinity and size Of crystalline regions were calculated by means of the decomposed diffraction patterns.
为深入了解日本落叶松的纤维特性,该研究对不同树龄和不同部位日本落叶松的纤维形态和纤维素结晶度进行了分析。
This paper had investigated fiber form and crystalline degree of Larix kaempferi in different tree age and different vertical location within a stem.
用IR研究了经射线辐射的精制棉纤维素的相对结晶度的变化,结果表明随辐射剂量的加大,棉纤维素的相对结晶度逐渐减小。
The relative crystallinity of refined cotton cellulose was studied by IR. The results shows that the relative crystallinity of cellulose decrease with the increasing of radiation dose .
处理后的纤维素和杉木粉的氢键作用均被削弱,相对结晶度均被降低。
Hydrogen bonding actions of cellulose and fir powder were all weakened greatly after treatment and the crystallinity of them were also decreased.
通过预处理可以降低秸秆纤维素的结晶度,提高秸秆的利用率。
Therefore, crystallinity of fiber of straw can be degraded by pretreatment, and the utilization can be improved.
最佳酶处理条件下,CTMP经纤维素酶或木聚糖酶处理后,纸浆的得率基本未受影响,纸浆的结晶指数变化也不大。
The pulp yields were basically uninfluenced after enzymatic treatment under the optimal treatment condition. The crystallization index of the fibers changed little.
纤维素结晶被破坏;而当底物没有被碱溶胀,或被碱溶胀而没有黄原酸化时,接枝聚合没有明显引起纤维素结晶的变化。
It was found that the crystalline structure of cellulose could be destroyed by the synergetic effect of alkali swelling, xanthating and grafting;
结果表明,液氮处理后纤维素的侧序分布、结晶度、微晶尺寸、晶格形态都发生深刻的变化。
The resultsshowed that after the treatment of cellulose with L-NH3, the lateral order distribution, crystallinity, crystallite size and lattice form of cellulose were dramatically changed.
结果表明:微生物酶使木粉的玻璃化温度降低,纤维素的结晶度提高,综纤维素含量以及纤维素聚合度降低;
The result indicates:handled by enzyme, the wood's glass transition temperature, holo-cellulose content and degree of polymerization increased, crystallinity increased;
结果表明:微生物酶使木粉的玻璃化温度降低,纤维素的结晶度提高,综纤维素含量以及纤维素聚合度降低;
The result indicates:handled by enzyme, the wood's glass transition temperature, holo-cellulose content and degree of polymerization increased, crystallinity increased;
应用推荐