树枝状大分子季铵盐的制备及抑菌性能研究

以丙烯酸甲酯和乙二胺为原料合成了树枝状大分子聚酰胺-胺(PAMAM),采用1HNMR进行了结构表征。在此基础上用2,3-环氧丙基三甲基氯化铵(GTA)对其表面进行修饰,制备了树枝状大分子季铵盐。采用单因素法确立了制备树枝状季铵盐的最优反应条件:1.0G PAMAM与GTA摩尔比为1∶7,混合溶剂中水的质量分数为60%,反应温度60℃,反应时间8 h。制备的树枝状季铵盐用FTIR进行结构表征,并对其抑菌性能进行了研究。结果表明:树枝状大分子季铵盐对大肠杆菌、金黄色葡萄球菌和黑曲霉菌有抑菌作用,对黑曲霉菌的抑菌浓度最小,为8.5μg/m L,抑菌活性最大。     

新型蓖麻油基季铵盐的合成及其抑菌性能研究

以蓖麻油酸甲酯为起始原料,与N,N-二甲基-1,3-丙二胺和溴化苄、溴乙烷通过酰胺化反应和季铵化反应生成了新型蓖麻油基季铵盐,其结构经FTIR、1HNMR、13CNMR及ESI-MS进行了确证。采用抑菌圈直径法对目标产物的抑菌性能进行了测试,结果表明,两种季铵盐均有一定的抑菌活性,N,N-二甲基-N-乙基-蓖麻油酸酰胺丙基溴化铵的抑菌活性略强于N,N-二甲基-N-苄基-蓖麻油酸酰胺丙基溴化铵。     

新型有机反离子季铵盐复配体系的抑菌效果研究

选用新型有机反离子季铵盐双癸基二甲基甲酸铵(DDAF)、易生物降解双子季铵盐1,4-二(月桂酰丙基二甲基氯化铵)丁烯(GC-B)以及市面上常用的季铵盐十二烷基二甲基苄基氯化铵(1227)和双癸基二甲基氯化铵(2280)进行复配并对其抑菌性能进行测试,通过均匀实验的设计及优化得到较佳的配方比例.结果表明:SPSS对数据的...     

双子季铵盐表面活性剂的制备及性能研究

以十二烷基二甲基叔胺C12H25(CH3)2N、盐酸、环氧氯丙烷为原料合成了一种双子季铵盐表面活性剂GC12,经红外光谱和核磁共振氢谱证实其结构并研究了其表面活性、泡沫性能、乳化性能、HLB值及乳液的粒径分布。结果表明,GCl2具有较高的表面活性,良好的乳化能力和泡沫性能,临界胶束浓度(cmc)值仅为1.07×10-3mol/L,γcmc值为36.5 m N/m,HLB值为12.5,在15~55℃下乳液颗粒平均直径为120 nm,是良好的O/W型乳化剂。     

双子季铵盐表面活性剂的制备及性能研究

以十二烷基二甲基叔胺C12H25(CH3)2N、盐酸、环氧氯丙烷为原料合成了一种双子季铵盐表面活性剂GC12,经红外光谱和核磁共振氢谱证实其结构并研究了其表面活性、泡沫性能、乳化性能、HLB值及乳液的粒径分布。结果表明,GCl2具有较高的表面活性,良好的乳化能力和泡沫性能,临界胶束浓度(cmc)值仅为1.07×10-3mol/L,γcmc值为36.5 m N/m,HLB值为12.5,在15⁵5℃下乳液颗粒平均直径为120 nm,是良好的O/W型乳化剂。     

羧甲基壳聚糖季铵盐的制备及其抑菌性能研究

以不同分子量的壳聚糖为原料合成了一种新型水溶性O-羧甲基-N-三甲基壳聚糖季铵盐(CMTMC),用FTIR表征了其结构,同时进行了抑菌实验.结果表明在水介质中CMTMC对大肠杆菌、金黄色葡萄球菌和枯草芽孢杆菌的最低抑菌浓度分别为1 μg·mL-1、1 μg·mL-1和2 μg·mL-1,在0.5%醋酸溶液介质中的抑菌效果比在水介质中更好.     

可得然胶凝胶特性改变的研究

研究了添加两种盐类（PS、NS）对可得然胶凝胶强度的影响。结果表明,PS能够显著增强可得然胶在高温状态时的凝胶强度;NS能够显著降低可得然胶的凝胶初始温度;NS与PS复配,其协同作用可大幅提高可得然胶的凝胶强度、降低可得然胶的使用浓度和凝胶初始温度,从而拓展其应用范围。一     

可得然胶凝胶性能影响因素的研究

研究了3种物质PS、DS、WG对可得然胶凝胶强度和高温状态脱水率的影响。结果表明。PS对可得然胶凝胶强度具有显著提高作用,PS、DS、WG均对可得然胶高温状态脱水率有一定的降低作用,PS-DS-WG复配体在显著提高可得然胶凝胶强度的同时,还能降低其高温状态脱水率。     

γ-聚谷氨酸/可得然胶共混膜的制备研究

本研究的目的是制备一种可以生物医用的新型材料。以可得然胶和γ-聚谷氨酸为原料,通过溶液共混法制备可得然胶/γ-聚谷氨酸共混吸水膜材料。产物用吸水率测试和力学性能测试等方法对共混膜进行了表征。结果显示,当可得然胶与γ-PGA质量比为2∶1,反应温度为50℃,交联剂为季戊四醇时,共混膜的各项性能达到最佳,其吸水率为1200,透气性为152.625 g/（h.m2）,力学强度为10.6 MPa。     

硬脂酸三乙醇胺酯季铵盐的性能

研究了3种不同的硬脂酸三乙醇胺酯季铵盐的生物降解性、柔软性、抗静电性以及对织物白度的影响等性能，并与双十八烷基二甲基氯化铵(D1821)进行了比较，结果表明：双硬脂酸乙酯基羟乙基甲基硫酸甲酯铵(EQDMS)的生物降解性、抗静电性与对织物白度的影响均优于D1821，其柔软性和D1821相当，是一种可替代D1821的性能优良的新型柔软剂。     

Preparation and Characterization of Hybrid Quaternized Chitosan/Acrylic Resin Emulsions and their Films

An acrylic resin emulsion containing a quaternary ammonium salt (hybrid q‐chitosan/acrylic resin emulsion) was prepared by emulsion polymerization using an acrylic monomer with and without DAAM. DAAM was used to incorporate a functional keto group into the acrylic resin emulsion. Furthermore, a hybrid chitosan/acrylic resin emulsion was prepared for comparison. The elution of q‐chitosan in water from the acrylic resin film with a keto group was less than that from the acrylic resin emulsion without a keto group. In addition, the mechanical properties of the hybrid q‐chitosan/acrylic resin film could be modified by q‐chitosan that was crosslinked between acrylic resin particles. Furthermore, hybrid q‐chitosan/acrylic resin films had adsorption ability for formaldehyde, and the antimicrobial properties of these films were superior to those of the hybrid chitosan/acrylic resin film.

     

壳聚糖季铵盐的制备及应用进展

壳聚糖季铵盐是一种具有广阔应用前景的阳离子聚合物。概述了壳聚糖季铵盐的制备方法以及壳聚糖季铵盐在水处理、化妆品、制膜等领域的应用进展情况,并展望了壳聚糖季铵盐的研究趋势。     

可德胶的磺酸化改性及产物物化性能的研究

为了提高可德胶的水溶性,对其进行磺酸化改性研究。本实验是在氮气保护下,以二甲亚砜作溶剂,选择不同水浴温度（如：40℃、50℃、60℃、70℃）下持续搅拌9h,然后加入O．5g三氧化硫一吡啶,继续搅拌2h后,用0．5mol／L的NaOH中和后于去离子水中进行透析,最后在50℃下旋转蒸发浓缩。结果表明：当反应温度65℃（4#）时,所制得的磺酸化改性可德胶具有较好的溶解性。     

Preparation of Quaternized Lignin Derived from Oil Palm Empty Fruit Bunches and its Flocculation Properties

Quaternized lignin-based flocculant (QL) was prepared by a single-step reaction of an extracted lignin (EL) derived from oil palm empty fruit bunches (OPEFB) with 3-chloro-2-hydroxypropyl trimethylammonium chloride (CHPTAC) under alkaline condition. The performance of QLs was studied for various β values (molar ratios of CHPTAC to phenylpropanoid unit of lignin), flocculant dosages, pH values, kaolin concentrations, slow mixing rates and sedimentation times. The QL10 achieved the highest turbidity removal efficiency (ε_t) with increasing flocculant dosage, pH and kaolin concentration to the optimal conditions of 5?mg?L^?1, pH 7 and 1000?mg?L^?1, and required 20?min of sedimentation time at all the mixing rates tested. The flocculation kinetics agreed well with the particle collision model. The QL10 has good sludge dewatering properties compared to the alum. It also showed encouraging results in water quality analysis for sewage wastewater flocculation in comparison to that of the alum. This indicates the potential application of QL in treating water and wastewater.     

低温成膜苯丙乳液的制备及性能研究

采用预乳化法制备了可低温成膜的苯丙乳液,讨论了软硬单体配比、乳化剂选择、乳化剂用量以及成膜助剂用量对乳液及涂膜性能的影响,并对低温成膜机理作了简要的探讨。结果表明,当软硬单体质量比为1.1∶1.0,十二烷基硫酸钠（SDS）与烷基酚聚氧乙烯醚（OP-10）质量比为2∶1,乳化剂用量为4%,成膜助剂用量为单体总量6%时,所制备的苯丙乳液及涂膜各项性能优良。     

Materials Based on Quaternized Polysulfones with Potential Applications in Biomedical Field: Structure–Properties Relationship

Starting from the bactericidal properties of functionalized polysulfone (PSFQ) and due to its excellent biocompatibility, biodegradability, and performance in various field, cellulose acetate phthalate (CAP) and polyvinyl alcohol (PVA), as well as their blends (PSFQ/CAP and PSFQ/PVA), have been tested to evaluate their applicative potential in the biomedical field. In this context, because the polymer processing starts from the solution phase, in the first step, the rheological properties were followed in order to assess and control the structural parameters. The surface chemistry analysis, surface properties, and antimicrobial activity of the obtained materials were investigated in order to understand the relationship between the polymers’ structure–surface properties and organization form of materials (fibers and/or films), as important indicators for their future applications. Using the appropriate organization form of the polymers, the surface morphology and performance, including wettability and water permeation, were improved and controlled—these being the desired and needed properties for applications in the biomedical field. Additionally, after antimicrobial activity testing against different bacteria strains, the control of the inhibition mechanism for the analyzed microorganisms was highlighted, making it possible to choose the most efficient polymers/blends and, consequently, the efficiency as biomaterials in targeted applications.     

改性聚丙烯酸酯水溶胶的合成及其胶膜性能的研究

采用EVA乳液作为改性物质，合成了聚丙烯酸酯水溶胶，既保持了纯聚丙烯酸酯水溶胶的优点，又克服了其不足。讨论了聚合工艺、丙烯酸用量、EVA乳液用量以及氨化温度等对乳液和水溶胶的影响。     

载银蒙脱石无机抗菌剂的抗菌性能研究

以大肠杆菌、金黄色葡萄球菌、产气杆菌、枯草杆菌、啤酒酵母菌和白色念珠菌作为实验菌株,采用试管振荡试验法,检测载银蒙脱石的抗菌性能,并进行抗菌剂的耐水性和耐久性试验.结果表明:载银量在2.5%～3.0%之间的载银蒙脱石抗菌剂具有良好的抑菌和灭菌性能.载银蒙脱石抗菌剂具有广谱抗菌性,不易分解失效,抗菌时效长,并具有良好的耐水性.     

聚丙烯抗菌塑料的制备及性能研究

将表面处理过的载银无机抗菌剂与聚丙烯(PP)经双螺杆挤出得到高浓度的抗菌母料,然后按一定比例添加到PP中制备了PP抗菌塑料。研究了抗菌母料的毒性、添加量对PP抗菌塑料抗菌性能的影响,抗菌剂在PP抗菌塑料中的分散性,以及PP抗菌塑料的抗菌性能、力学性能和光老化性能。结果表明,抗菌剂在含4%(质量含量,下同)抗菌母料(或1%的抗菌剂)的PP抗菌塑料中分散均匀,基体力学性能不受影响;其对大肠杆菌、金黄色葡萄球菌等的抗菌率都达到99%以上,具有高效、广谱和长效抗菌性能以及良好的光老化性能。