整理纺织品的双膜抗菌芳香微胶囊研制

提出二次聚合法制备用于整理纺织品的抗菌芳香型微胶囊.该方法分两次加入固化剂,通过合理控制各种参数,使环氧树脂与固化剂产生两次聚合,形成具有双膜结构的抗菌芳香微胶囊.对影响该制备方法的工艺参数进行了详细分析,测试了微胶囊的性能.该方法所制备的抗菌芳香型微胶囊性能大大提高,用该微胶囊整理纺织品效果较好且持久耐洗.     

Pain relief by xenograft of subarachnoid microencapsulated bovine chromaffin cells in cancer patients

The bovine chromaffin cells (BCC) implanted into the subarachnoid space can release analgesic substances such as opioid peptides and ealeeholamines. Clinical trials have provided the evidence that the implantation of polyvinylchloride ( PVC) hollow fiber encapsulated BCC by surgery can relief the pain in cancer patients. In the present study, BCC were encapsulated in alginate-polylysine-alginate (APA) mieroencapsules which protect the grafting of xenogeneic cells from host immune system anil allow BCC to function effectively without using immunosuppression agents. The microencapsulated BCCs (5 X 106~—8 X 106) were transplanted into the subarachnoid space I^._s of 17 patients who suffered from chronic cancer pain and had to have long-term administration of analgesics. The pain scores and morphine intake tesl showed that microencapsulated BCC graft totally stopped the chronic pain in three of the patients over a period of 200 days and in the other three over a period of 100 days. The resulls suggesl thai APA microencapsulated BCC xenotransplantation could be a novel alternative approach to managing pain of cancer patients.     

Preparations and Properties of Perfume Microcapsules

With Perfume as core and gelatin-gum arabic as mem-brane,a series of microcapsules were prepared by meansof complex coacervation at various technical conditions.Their interior and outer diameters and membrane thick-nesses were measured and the effects of preparation tech-niques on microcapsule properties were revealed.     

DETERMINATION OF MEMBRANE THICKNESS OF MICROCAPSULE

A new optical microscope duplex focus method is proposed to determine membrane thickness through direct measuring the interior and outer diameters of microcapsules by optical microscope duplex focusing.     

原位聚合法制备阻燃剂红磷微胶囊的研究

研究了原位聚合法制备阻燃剂红磷微胶囊的工艺，测试了产品的吸水率、PH3发生量等物理性能，重点讨论了乳化分散剂对微胶囊粒径的影响，并研究了其用于ABS的阻燃和增强增韧双重效果．     

测定微囊成囊率的新方法研究

介绍了一种测定徽囊成囊率的新方法。该方法克服了化学法对芯料的特异选择性和专一性，具有操作简便、检出迅速、结果准确、实用性强等特点，适用于芯料为液态的微囊成囊率的测定。     

微胶囊玫瑰精油的制备及其卷烟加香评价

 制备微胶囊化玫瑰精油并评价其卷烟加香效果.以糖化玻璃作为壁材,制备微胶囊化精油,将其添加于卷烟中,并进行感官评吸.结果表明微胶囊玫瑰精油在水中溶解度好,不易挥发,易储存,还能增加卷烟果甜香韵,提升卷烟品质,使余味舒适,降低刺激感,改善口腔湿润度.微胶囊玫瑰精油用于作为香料添加在卷烟中独具特色,有较大的开发利用价值.     

鱼用含睾酮的明胶- 羧甲基纤维素钠微囊制剂

制备了含睾酮的明胶- 羧甲基纤维素钠微囊(TGM) , 对微囊的制备工艺进行了优化. TGM 睾酮的包囊率为( 71.8±0. 9) %,含药量为( 17. 4±0. 41) %.TGM 中药物释放数据符合零级释放规律.微囊的平均囊径为 29. 5μm. 用微囊对鳗鲡进行注射催熟实验, 间隔 25 d 注射1次, 80% 的雄鳗达到性成熟. 间隔 25 d 注射 TGM 4 次, 可诱导雌鳗平均GSI达到19.7%,最高 GSI为 34. 1%.     

溶剂固定化聚砜微胶囊的制备及其稳定性

为解决液液萃取过程中溶剂损失及两相返混问题 ,研究了相转化法溶剂固定化的制备技术。借鉴已有的微胶囊技术 ,选用聚砜 (PS)为膜材料、磷酸三丁酯 (TBP)为芯材的体系 ,用锐孔 -凝固浴法制备出球腔内包覆溶剂 TBP的聚砜微胶囊。讨论了聚合物溶液组成、过孔速度等因素对微胶囊的形态及结构的影响 ,并根据传质实验讨论其稳定性。结果表明 :聚砜质量分数在 10 %～ 15 %、 TBP质量分数为聚砜的 1.2～ 2倍的配比下 ,过孔速度控制在 3 m L.min-1左右 ,体积比为 1:1的乙醇 -水溶液为凝固浴制得的溶剂固定化微胶囊 ,其传质稳定性优于浸渍 TBP的 PS中空微球 ,4次重复性实验的传质效果基本没有变化     

微胶囊相变材料的制备与表征

以正十八烷为芯材、三聚氰胺-甲醛树脂为壁材,采用原位聚合法合成了相变储热微胶囊.利用光学显微镜、扫描电镜、差示扫描量热仪等对样品性能进行了分析和表征,并讨论了乳化剂种类和用量、助剂异氰酸酯等对微胶囊性能的影响.实验结果表明,采用阴离子与非离子混合乳化剂制备的微胶囊的各项性能均优于采用单一阴离子乳化剂所制得的微胶囊;助剂异氰酸酯的加入可大大提高微胶囊的相变潜热;所制备的相变储热微胶囊包裹完全,表面光洁,粒度均匀,平均粒径为4μm,相变潜热达176.5 J/g.