戊聚糖

Through single factor experiment, we educed that the best condition of dissolvable and bulgy capability of Polyvinyl alcohol-chitosan hydrogel is n: n 6:1, a volume concentration of crosslinker of 0.05%, and reaction time 9h.

通过单因素实验，得出了聚乙烯醇／壳聚糖凝胶具有最佳溶胀性能时的条件：聚乙烯醇与壳聚糖的摩尔比为6：1，交联剂戊二醛的体积分数为0.05%，反应时间9h。

The hydroxyl groups were introduced to the surface of silicone rubber by O_2 cold plasma treatment,coatings made from chitosan were chemically bonded to silicone rubber via silane-glutaraldehyde molecules and proved by the results of surface composites analysis with X-ray photoelectron spectroscopy and attenuated total reflection fourier transform infrared spectroscopy.

用氧低温等离子体处理硅橡胶，在其表面引入羟基，然后利用硅烷偶联剂的硅烷反应，通过中间物戊二醛在硅橡胶表面制备了几丁聚糖涂层。X射线光电子能谱和衰减全反射傅立叶变换红外光谱测试证实在硅橡胶表面成功制备了几丁聚糖涂层，表面接触角测试表明几丁聚糖涂层明显提高了硅橡胶的亲水性

The preparation and characterization of trimethylamine modified glutaraldehyde-crosslinked chitosan resin activated with cyanuric chloride,and its infrared spectral properties were studied.

用水相均匀交联法制备戊二醛交联壳聚糖树脂，以三聚氯氰为活化剂，合成了三甲胺修饰戊二醛交联壳聚糖树脂，研究了该树脂的红外光谱特征及吸附性能。

The specific properties of materials, such as the palate adhesion, dynamic cruor, anti-bacterial and the degradability of lysozyme, were studied, which provide valuable data for further application. The main creative ideas are listed as follows:(1) The water-retention chitosan/poly vinyl alcohol blend fiber was obtained by coagulating in 10％ NaOH/ethanol solution, and the blend and crosslink due to GA can enhance the mechanical properties of fiber;(2) The controlled degradable chitosan/gelatin blend fiber was obtained by solution filature, and the mechanical properties were improved;(3) The N-acylchitosan with the different degree of substitution were successfully prepared, and the relationship between structure and properties was estabilished;(4) By a new solvent system of 6％ NaOH/4％ urea for cellulose, the blood anti-coagulant function films were prepared by blending cellulose with chitin;(5) In the same solvent system above mentioned, the anti-bacterial blend films based on cellulose and carboxymethyl-chitosan were prepared, and the relationship of DS and the anti-bacterial property was concluded;(6) The controlled degradable chitosan films was obtained by the chemical crosslink.

本论文的主要创新点：（1）以NaOH水溶液／无水乙醇为凝固液，采用溶液纺丝法制备出保水性壳聚糖／聚乙烯醇纤维，共混和戊二醛交联极大提高了壳聚糖纤维力学性能；（2）用壳聚糖和明胶共混，以溶液纺丝法制备出可控降解的壳聚糖／明胶纤维，并大幅度提高了壳聚糖共混纤维的干、湿态抗张强度；（3）确立了不同取代度N-酰基壳聚糖的合成方法及其膜的结构与性能的关系；（4）利用纤维素新溶剂6％NaOH／4％尿素制备出抗凝血性纤维素／甲壳素共混膜；（5）利用上述纤维素新溶剂制备出抗菌性纤维素／羧甲基壳聚糖共混膜，揭示了羧甲基壳聚糖取代度与抗菌性能的关系；（6）制备出可控降解壳聚糖交联膜。

The glutaraldehyde was coupled with amido group of chitosan, and template protein-bovine hemoglobin was immobilized by aldehyde group.

用壳聚糖包裹的硅胶为载体，利用壳聚糖表面的氨基与戊二醛结合，在硅胶表面引入醛基，固定模板蛋白。

Chitosan had been modified by polyacrylate sodium, glularaldehyde, and NaBH4, respectively, which afforded three kinds modified chitosan: polyacrylate sodium modified chitosan (CIS- PA4) chitosan bead and pentamethylene diamido crosslinked chitosan bead (CTSB- G- Hy). The adsorption properties of CTS-CTSB and CTSB-G-Hy were studied by L25(56) orthogonal experimental design. They show high adsorption activities for Pb2+ in solution. The highest removal efficiency of Pb2+ for CTS-PA4, CTSB and CTSB-G-Hy is 94%, 96% and 93%, respectively. The results showed the adsorption property of CTSB is the highest. The CTSB- G- Hy has good mechanical property, acid-resistance and alkali-resistance.

第二部分壳聚糖的改性及其对水溶液中铅离子的吸附性能研究以壳聚糖为原料制备了三种改性吸附剂——聚丙烯酸钠改性壳聚糖(CTS——PA_4)、珠状壳聚糖凝胶树脂和戊二氨交联珠状壳聚糖凝胶树脂，着重考察了CTSB—G—Hy的制备条件，并考察了三种吸附剂吸附6.3mg/L铅离子水溶液中铅的最佳使用条件，结果表明对CTS—PA_4而言当pb~(2+)溶液的pH在4～6.5之间，吸附剂用量为5g/L，吸附时间为1h时pb~(2+)去除率高于94％，CTS—PA_4可在酸性条件下使用，在碱性条件下依然有效但处理效果较差；CTSB对pb~(2+)具有很好的吸附能力吸附剂用量为5g/L，吸附时间为1h时处理效果极佳，pb~(2+)去除率高于96％；CTSB—G—Hy对pb~(2+)具有一定的吸附能力，吸附剂用量为3g/L，吸附时间为1.5h时处理效果最佳，Pb~(2+)去除率高于93％，而且CTSB—G—Hy的机械强度高，耐酸碱性强，可在较宽的pH范围内使用。

Four pre-extraction conditions under 150℃ and 160℃ were adopted to investigate the influences on hydrolysis and pretreated chips' composition.

结果表明，热水预处理对半纤维素水解糖提取效果显著，戊聚糖提取率在 27%~43%。

State Key Lab of Pulp and Paper Engineering,South China University of Technology,Guangzhou,Guangdong Province,510640) The fcasibility of determining the pentosan in pre-extraction liquor from eucalyptus chips by using Douglas colorimetric method was discussed in this paper.

探讨了Douglas 比色法用于测定桉木半纤维素预提取液中戊聚糖的可行性，通过对木糖、葡萄糖、甘露糖、半乳糖和木素在相同条件下显色反应后的谱图进行比较，证明利用553 nm处的最大吸收进行测定可以排除己糖和木素的干扰。

The chemical constituents of walnut shell were systematically studied.

对核桃壳的化学组分研究表明：核桃壳的主要组分是木素、纤维素和半纤维素，与其他植物相比，冷、热水抽出物，1%NaOH抽出物，酸不溶木素含量均较高，纤维素含量明显较低，多戊聚糖含量与阔叶材相近。

Therefore, it is suggested that low pentosans are preferred for soft wheat cultivars.

因此，在软质小麦育种中应注意选择戊聚糖含量较低的品种。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。