水凝胶

The preparation of two series of pH and temperaturesensitive hydrogels with different amounts of carbonyl group was described.

描述了含不同羧基量的两个系列的pH及温度敏感水凝胶的制备方法。所得的凝胶在37℃和pH1.4条件下不溶胀，而在37℃pH7.4条件下则溶胀。

Results The main reason of silicon gel artificial body and brine bottle extraction after augmentation mammoplasty is envelope crispation. The main reason of polymer acrylic gel extraction after augmentation mammoplasty is sclerosis and discomfort of pain. The main reason of injected fat extraction after augmentation mammoplasty is infective liquefaction.

结果：硅凝胶假体及盐水袋隆乳术后取出的主要原因为包膜挛缩、渗漏及破裂；聚丙烯酰胺水凝胶注射隆乳术后取出原因主要为硬结及疼痛不适；脂肪注射隆乳术后取出原因为感染液化。

RESULTS Gelation temperature of250gL-1 hydrogel was5℃,and its mechanical properties were good.

结果 250gL-1 的水凝胶具有恰当的凝胶化温度和能满足要求的力学性能。

The anisotropy inverted spectra will be determine, when the temperature reaches and goes beyond the temperature of phase transition for the NNPA and NIPA hydrogels that exhibit a LCST phase behaviors. The network is collapsed and the hydrated Cu ion is bound by network chains.

对于具有LCST相行为的NNPA 和NIPA水凝胶，当温度达到并超过其相转变温度时，即可测得其Cu自旋探针各向异性的ESR倒置谱，这种倒置谱是由于凝胶相变后，网格塌陷，网络缠裹水化Cu离子的结果。

In the buffer solutions with different pH values the swelling characteristics of hydrogels based on SBCS prepared by cross-linking with glutaraldehyde were studied.

以戊二醛为交联剂制备了 N -(2-磺酸基苯甲基)壳聚糖水凝胶，考察了凝胶在不同pH值缓冲溶液中的溶胀行为。

By increasing the OD and concentration of oxidized alginate, gelatin and sodium tetraborate, gelation time could be shortened from ten minutes to one minute.

流变性能检测表明，通过调整氧化度、氧化海藻酸钠浓度、明胶浓度与四硼酸钠浓度，可把此类水凝胶的凝胶时间在600s至60s之间进行调节。

The results showed that the water uptake followed non-Fickian or zero order process in neutral or basic media, and the release of model drugs from hydrogels of appropriate composition was of zero order kinetics over a period of several hours.

在中性或碱性介质中，凝胶的溶胀为非Fick或零级过程，对于组成适当的水凝胶，在数小时内以零级动力学过程释放药物。

Temperature-sensitive hydrogels P(NIPA-co-DiAB) with aromatic group as hydrophobe was were prepared by free radical micellar crosslinking copolymerization with N-isopropyl acrylamide, N,N-dially benzylamine as comonomers, N,N-methylene-bis-acrylamide as crosslinker, sodium dodecyl sulfate as surfactant and ammonium persulfatetetramethylethylenediamine as initiator system.

以N-异丙基丙烯酰胺、N，N-双烯丙基苄胺为共聚单体、N，N-亚甲基双丙烯酰胺为交联剂、十二烷基硫酸钠为表面活性剂、过硫酸铵-四甲基乙二胺为氧化还原引发体系，采用自由胶束交联共聚法合成了疏水基团为芳香基的疏水改性温敏性智能水凝胶P(NIPA-co-DiAB)。

After copolymerized with acrylic acid and 2-acrylamido-2-methylpropanesulfonic acid, LLC hydrogels were modified with COOH and SO3H, respectively.

与普通水凝胶相比，以溶致液晶为模板合成的溶致液晶型水凝胶孔径更加的小而均匀。

Methods BTXA labeled with125Iwas obtained. The radioactivitymeasurementwas taken tomeasure the solubility ofBTXA in gel and BTXA solution. The rightgastrocnemiusmuscles of12 SD ratswere injectedwithBTXA geland the leftgastrocnemiusmuscles injectedwith normal salinewere used as controls. HE staining and 1% gold chloride stainingwere used to study the tissue changes 6 months and 12 months afterBTXA gel injection and transmission electronmicroscopy was used to observe the ultrastructural changes.

将BTXA行示踪标记配制125I-BTXA水凝胶与125I-BTXA水溶液，进行样品放射性强度测定。12只SD大鼠用随机数字表法分为A、B两组，每组6只，大鼠右侧腓肠肌注射BTXA水凝胶，左侧腓肠肌注射等体积生理盐水作对照，于注射后6个月、12个月切取腓肠肌标本，常规病理HE染色、1%氯化金染色，透射电子显微镜观察组织结构变化。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

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如果有任何问题，你可以随时联系我。