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纤维素酶水解可以引起纤维表面结构及孔结构发生变化,从而有利于纤维的改性。本文通过不同的试验方法来表征这些变化,如纤维规格,保水值(WRV),难移(HR)水含量,可冻结和不可冻结结合水含量,聚合物吸附及结晶指数。高用量的纤维素酶处理(600U/g绝干固体)后,纤维长度减少,并且沿横向切断。高用量处理后,用WRA来衡量纤维的润胀能力,且HR水含量有所增加。相对于结晶区来说,无定形区的纤维素纤维更容易受到酶的作用。
Cellulase hydrolysis can cause fiber surface structure and pore structure changes, which is conducive to fiber modification. These changes are characterized by various test methods such as fiber specifications, water vapor retention (WRV), refractory (HR) water content, freezable and unfreezable water content, polymer adsorption and crystallinity index. After a high amount of cellulase treatment (600 U / g of absolute dry solids), the fiber length is reduced and cut in the cross direction. After high-volume treatment, WRA was used to measure the swelling capacity of the fibers with an increase in HR water content. Cellulose fibers in the amorphous region are more susceptible to enzymes than crystalline regions.