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来源:学生作业帮 编辑:神马作文网作业帮 分类:英语作业 时间:2024/09/22 15:50:52
请帮我翻译一段文章,机器不要,谢谢.急用!
The technological application of chitosan is limited by the insolubilitv of the polymer.at 1 pH over 5.0 Further,functionality of chitosan depends on the molecular structure and its solubility.Solubility plays an important role in the biological application of any compound. Annealed chitosan polymorphs (anhydrous form) are usually associated with the decreased solubility and loss of functionalitv. Solubility of various chitosan was measured at different pH values(Fig.3).The results showed that solubility of chltosan was associated closely with pH. The solubility of chitosan was decreased with increased pH. Briefly,in the acid solution of pH 8.transmittance of solution could decrease to be about 11% ..Therefore,dilute aqueous acidic condition was needed for the complete dissolution of native chitosan.However,the advantage of solubility,of low-molecular-weight chitosan.In the present study was easy to be seen.It was readily soluble in the aqueous medium. Transmittance of solution could reach more than 95% in entire range of pH 1~13
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该技术的应用壳聚糖是有限的,由insolubilitv的polymer.at 1 pH值超过5.0进一步,功能壳聚糖依赖于分子结构及其solubility.solubility中起着重要作用的生物应用任何化合物.退火壳聚糖多晶型(无水表格) ,通常与减少的溶解度和损失functionalitv .溶解度的各种壳聚糖是衡量在不同的pH值(图3 ) .结果表明,溶解度chltosan是密切相关的pH值.溶解度的壳聚糖降低与增加pH值.简单来说,中,在酸性溶液中的pH值< 6 ,透射比的解决方案可达到约百分之七十六,但有一个急剧下降,pH值之间的第6和第8 .在碱性溶液的pH值> 8.transmittance的解决方案可减少到约11 % ..因此,稀水酸性条件下,需要完整的解散本土chitosan.however ,利用溶解度,低分子量chitosan.in本研究容易被seen.it轻易易溶于水的媒介.透射比的解决方案可以达到95 %以上,在整个pH范围为1 〜 13