聚丙烯酰胺—l—聚四氢呋喃（PAm—l—PTHF）两亲聚合物网络的合成

两亲聚合物网络（Ａｍｐｈｉｐｈｉｌｉｃｎｅｔｗｏｒｋ）是一类由亲水和疏水高分子链段通过共价键连接而成,具有既能在水中溶胀又能在有机溶剂中溶胀的独特性能的聚合物网络体系,其中亲水和疏水链段分别聚集并形成微观相分离的相态结构,且亲水和疏水链段分别保留了各自的化学和物理性质［１］。两亲网络的独特性质使得它日益受到聚合物科学家的关注［２,３］。然而基于合成技术等方面的原因,迄今为止已有文献报道的两亲聚合物网络种类十分有限,本文以具有良好柔性和生物相容性的聚四氢呋喃（ＰＴＨＦ）（Ｍｎ～２０００）为疏水链…     

智能性共聚物水凝胶P（AM—NaA）相转变的研究

本文用＾６０Ｃｏ－γ射线辐射合成了聚（丙烯酰胺－丙烯酸钠）Ｐ（ＡＭ－ＮａＡ）智能性共聚物水凝胶，并用ＦＴＩＲ对共聚物进行了表征。着重研究了水凝胶在丙酮－水介质中的溶胀和收缩速率、溶胀平衡时间及体积相转变特性。     

聚乙烯醇－g－聚丙烯酸膜用于渗透气化法分离乙醇－水的研究

合成了聚乙烯醇－ｇ－聚丙烯酸接枝聚合物（ＰＶＡ－ｇ－ＰＡＡ），分别用ＫＯＨ、ＮａＯＨ、ＬｉＣｌ的乙醇－水溶液处理ＰＶＡ－ｇ－ＰＡＡ膜。发现离子膜用于乙醇－水的渗透气化分离可以大幅度提高分离系数，特别是用ＫＯＨ处理，分离系数可达４００。     

温度及pH敏感聚（丙烯酸）／聚（N—异丙基丙烯酰胺）互穿聚合物网络水凝胶的...

合成聚（丙烯酸）／聚（Ｎ－异丙基丙烯酰胺）互穿聚合物网络（ＰＡＡｃ／ＰＮＩＰＡ ＩＰＮ）水凝胶，具有温度及ｐＨ双重敏感特性。这种水凝胶在弱碱性条件下的溶胀率远大于酸性条件下的溶胀率。在酸性条件下，随着温度上升，凝胶的溶胀率也随之逐渐上升；而在弱碱性条件下，温度低于聚（Ｎ－异丙基丙烯酰胺）（ＰＮＩＰＡ）的较低临界溶解温度（ＬＣＳＴ）时，溶胀率也随着温度的上升而上升，而温度达到ＬＣＳＴ时，凝胶的溶胀率     

主链含PEO链段的聚对苯乙炔类蓝色电致发光共聚物

采用Ｗｉｔｔｉｇ反应合成了一种分子主链上烷氧基取代刚性共轭聚对苯乙炔（ＰＰＶ）民柔性聚氧化乙烯（ＰＥＯ）链段交替排列的、可溶于氯仿与四氢呋喃等普通有机溶剂的新型结构的聚对苯乙炔类功能性发光共聚物ＥＯ－ＰＰＶ。采用ＦＴ－ＩＲ、＾１Ｈ－ＮＭＲ、ＤＳＣ、ＧＰＣ、元素分析等手段对共聚物进行了表征,并制备了结构为（Ａｌ）Ｃａ／ＥＯ－ＰＰＶ／ＩＴＯ的单层电致发光器件、器件的最大发光波长位于４７５ｎｍ（蓝光）。     

四氢呋喃开环均聚以及四氢呋喃和环硫氯丙烷共聚新催化体系

研究发现无水稀土氯化物 ５０％发烟硫酸体系是四氢呋喃（ＴＨＦ）均聚和四氢呋喃与环硫氯丙烷（ＣＭＴ）共聚合的优良新催化体系．考察了ＴＨＦ均聚反应特征，在合适条件下，ＴＨＦ聚合以６５％转化率制得粘均分子量达１０，０００～１５，０００的白色聚四氢呋喃（ＰＴＨＦ）固体．端羟基分析法测得聚合物的分子链两端均为羟基．考察了影响ＴＨＦ ＣＭＴ共聚合反应诸因素，如聚合温度和时间、两单体的比例等，制得数均分子量为１，０００左右的淡黄色粘性固体共聚物．     

新型高效催化剂乙烯／1—丁烯气相齐聚和共聚制摆弹性体？…

用新型催化体系ＴｉＣｌ４,Ｔｉ（ＯＢｕ）４／ＭｇＣｌ２,ＳｉＯ２和ＺｎＣｌ２／醇／ＡＩＲ３催化乙烯与１－丁烯气均聚及共聚,制得两种共聚物弹性体,发现新型催化剂体系具有独特的齐聚和原位共聚性能,采用＾１３ＣＮＭＲ测定了共聚物链序列分布结构,观察到共聚单体在聚合物链中分布不均匀,存在较长的乙烯链段和较多的１－丁烯嵌段,产物ＤＳＣ谱图表现出复杂的结构熔融行为,存在多种结晶形态,出现熔融肩峰及双峰,怀通常     

1,3—戊二烯／苯乙烯阳离子共聚合反应

本文研究了以甲苯为溶剂,ＡｌＣｌ３和ＢＦ３·ＯＥｔ２为引发剂,１,３－戊二烯（ＰＤ）与苯乙烯（Ｓｔ）的阳离子共聚合反应,并用红外光谱测定聚合物的微观结构。由共聚单体ＰＤ和Ｓｔ加入顺序的不同可生成无规共聚物Ｐ（ＰＤ－ｃｏ－Ｓｔ）和接枝共聚物Ｐ（ＰＤ－ｇ－Ｓｔ）和Ｐ（Ｓｔ－ｇ－ＰＤ）。无论是由ＡｌＣｌ３引发聚合反应,还是由ＢＦ３·ＯＥｔ２引发聚合反应,Ｓｔ上的碳阳离子的活性都高于ＰＤ上碳阳离子的活性。由ＡｌＣｌ３首先引发ＰＤ进行聚合反应,结束后再引入Ｓｔ时,聚合体系不能引发Ｓｔ聚合反应;相反ＡｌＣｌ３首先引发Ｓｔ聚合后的体系能继续引发ＰＤ的聚合反应。ＢＦ３·ＯＥｔ２无论先引发Ｓｔ或是ＰＤ,都能在聚合反应完成后接着引发另一单体而生成接枝共聚物Ｐ（ＰＤ－ｇ－Ｓｔ）和Ｐ（Ｓｔ－ｇ－ＰＤ）。二苯醚与烯丙基氯的加入,提高了碳阳离子的稳定性,增加了聚合物的分子量,但降低了碳阳离子的活性,使得聚合反应的产率降低,同时对Ｓｔ和ＰＤ碳阳离子的活性次序无明显影响     

聚（丙烯酰胺—丙烯酸）／聚（丙烯酰胺—二甲基二烯丙基氯化铵）聚电解质复…

通过动态光散射、粘度和透光率测定，研究了聚（丙烯酰胺－丙烯酸）［Ｐ（ＡＭ－ＡＡ）］／聚（丙烯酰胺－二甲基二烯丙基氯化铵）［Ｐ（ＡＭ－ＤＭＤＡＡＣ）］聚电解质复合溶液的结构和性能。结果表明，Ｐ（ＡＭ－ＡＡ）与Ｐ（ＡＭ－ＤＭＤＡＡＣ）复合比、溶液浓度和氯化钠用量影响溶液中复合物的构象和流体力学半径。Ｐ（ＡＭ－ＡＡ）与Ｐ（ＡＭ－ＤＭＤＡＡＣ）分子链间适度的库仑相互作用，可形成均相Ｐ（ＡＭ－ＡＡ）／Ｐ（Ａ     

聚(丙烯酸钠-4-乙烯基吡啶)的生物降解性和功能性研究

用自由基共聚法制备了一系列可生物降解的功能聚合物聚（丙烯酸钠－４－乙烯吡啶）「Ｐ（ＳＡ－ｃｏ－４ＶＰ）」,研究了其组成和分子量与生物降解性、螯合笥及分散性间的关系,结果表明：聚合物中４－乙基吡啶含量越大,Ｐ（ＳＡ－ｃｏ－４ＶＰ）的生物降解越显著,分子量一定时,少量的４－乙烯基吡啶引入聚丙烯酸钠主链是增强聚合物生物降解性和保持原有功能牧场生的有效途径。     

Polytetrahydrofuran amphiphilic networks. IV. Swelling behavior of poly(acrylic acid)‐l‐polytetrahydrofuran and poly(methacrylic acid)‐l‐polytetrahydrofuran networks

Poly(acrylic acid)‐l‐polytetrahydrofuran (PAA‐l‐PTHF) and poly(methacrylic acid)‐l‐polytetrahydrofuran (PMAA‐l‐PTHF) networks were synthesized by the free‐radical copolymerization of hydrophobic polytetrahydrofuran diacrylates with hydrophilic acrylic acid and methacrylic acid. Their swelling behavior was studied. Both PAA‐l‐PTHF and PMAA‐l‐PTHF networks had four solubility parameters, which indicated that they exhibited not only the properties of both hydrophobic and hydrophilic segments but also the combined properties of these two segments. The swell of these two series of networks was composition‐dependent in organic solvents and water. The relationship between the equilibrium swelling ratio (SR_e) in nonpolar solvents and the composition of the networks [the weight fraction of the PTHF segment (PTHF%)] may be expressed with a linear equation: SR_e = A × PTHF% + B. A and B are parameters that relate to the interaction of hydrophilic and hydrophobic segments with nonpolar solvents and to the properties of the networks, respectively. Because of the presence of a ? COOH group, these two network series were pH‐sensitive when the content of hydrophilic segments was higher. The pH sensitivity of networks could be controlled not only by the composition of the networks but also by the hydrophobic degree of the hydrophilic segments. © 2001 John Wiley & Sons, Inc. J Polym Sci Part B: Polym Phys 39: 1784–1790, 2001     

含聚1,3-二氧戊环链段可降解pH敏感性水凝胶的合成与表征

制备了含聚 1,3 二氧戊环链段具有pH敏感性的可解体聚合物凝胶网络 ,网络可在水中及有机溶剂中溶胀 ,且由聚 1,3 二氧戊环构成的水凝胶成分可以在酸性介质中降解 ,使网络解体 .利用红外光谱、色 质联谱等分析手段对聚合物凝胶网络进行了表征 .通过对降解产物的分析 ,一方面证实了降解现象的存在 ,另一方面证实了聚合反应机理     

Amphiphilic micro- and nanogels: Combining properties from internal hydrogel networks,solid particles,and micellar aggregates

Polymeric micro- and nanogels are defined by their water-swollen hydrophilic networks that can often impart outstanding biocompatibility and high-colloidal stability. Unfortunately, this highly hydrophilic nature limits their potential in areas where hydrophobic or amphiphilic interactions are required, for example, the delivery of hydrophobic cargoes or tailored interactions with amphipathic (bio-)surfaces. To overcome this limitation, amphiphilic micro−/nanogels are emerging as new colloidal materials that combine properties from hydrogel networks with hydrophobic segments, known from solid hydrophobic polymer particles or micellar cores. The ability to accurately adjust the balance of hydrophobic and hydrophilic components in such amphiphilic colloidal systems enables new tailored properties. This opens up new applications ranging from the controlled and sustained delivery of hydrophobic drugs, over carriers for catalytic moieties, to their assembly at hydrophilic/hydrophobic interfaces, for example, as advanced stabilizers in Pickering emulsions. While promising, the synthetic realization of such amphiphilic materials remains challenging since hydrophobic and hydrophilic moieties need to be combined in a single colloidal system. As a result, adjusting the micro−/nanogel amphiphilicity often changes the colloidal features too. To overcome these limitations, various strategies have been reported. The aim of this review is to give a brief overview of important synthetic tools, considering both advantages and disadvantages, thus critically evaluating their potential in different research fields.     

Amphiphilic Networks. I. Network Synthesis by Copolymerization of Methacryloyl-Capped Polyisobutylene with 2-(Dimethylamino) Ethyl Methacrylate and Characterization of The Networks

New amphiphilic networks have been synthesized by free-radical co-polymerization of hydrophobic methacryloyl-capped polyisobutylenes (MA-PIB-MA) with hydrophilic 2-(dimethylamino)ethyl methacrylate. Two MA-PIB-MAs have been prepared with M_n = 4920 and 10 200, and two series of networks were prepared with MA-PIB-MA contents between 48 and 71.5%. Variation of the molecular weight of MA-PIB-MA and its concentration in the network allows for a wide range of mechanical properties and swellability in hydrophilic and hydrophobic solvents. Differential scanning calorimetry shows the existence of two glass transitions in these networks and thus indicates a phase-separated domain structure. Tensile strengths and elongations were dependent on MA-PIB-MA contents varying from 57.7 to 39.8 kg/cm² and from 168 to 200%, respectively, with increasing MA-PIB-MA content. Solvent swelling of the networks ranged from 170 to 20% in water and from 40 to 170% in n-heptane with increasing MA-PIB-MA contents.     

聚(辛二酸-四甘醇酯)的合成及其微相分离结构的研究

通过熔融缩聚合成了一种新型的两亲性聚酯——聚(辛二酸-四甘醇酯)(PTEGSub),利用GPC,NMR,FTIR,TG,DSC等手段对聚合物的结构进行了表征.研究发现,在25℃时,PTEGSub在水中可以形成胶束,粒径主要集中在20～120nm之间,其临界胶束浓度(CMC)随分子量的升高而降低.通过TEM观察了在选择性溶剂中的胶束形态.利用AFM研究了PTEGSub的微相分离,发现聚合物膜中存在有球状的相分离结构.     

Synthesis and degradation of intelligent hydrogels containing polyacetal segments

Intelligent hydrogels were first obtained by copolymerization of telechelic poly(1,3-dioxolane) (pDXL) with acrylic acid, acrylamide, N-isopropylacrylamide respectively. The synthesis and characterization of the networks were discussed. The swelling behavior of the hydrogel was dependent on the solubility parameter of the solvents and hydrogels. The networks containing polyacetal segments (pDXL) can degrade by acid in different solvents. DXL and few other cycle molecules measured by GC-MS analysis were formed after degradation. According to the degradation products, the polymerization mechanism can be testified.     

Amphiphilic urethane acrylate hydrogels having heterophasic gel structure: swelling behaviors and mechanical properties

 Amphiphilic urethane acrylate hydrogels containing ionic group (dimethylopropionic acid, DMPA) were prepared by varying the molecular weight of the soft segment (polyether type, PTMG) and type of diisocyanate, and their swelling behaviors and mechanical properties were examined. They showed amphiphilic property due to the hydrophilic ionic groups and hydrophobic polyethers comprising the urethane acrylate network. Heterophasic gel structure could be found for the hydrogels prepared in water, but not for the hydrogels in organic solvent (1,4-dioxane), through scanning electron microscopy. Because of this heterophasic gel structure, they were able to take in a large amount of water as well. The hydrophobic interaction generated by the polyether soft segments between urethane acrylate network chains decreased the degree of swelling, however, increased reversibly the tensile strengths at equilibrium swelling state. MDI-based hydrogel showed low swelling ratio and high tensile strength because of its ordered hard domain structure. These amphiphilic urethane acrylate hydrogels showed salt- and pH-dependent swelling behaviors. Received: 26 September 1997 Accepted: 24 December 1997     

Thiolactone chemistry for the synthesis of functional silicone‐based amphiphilic co‐networks

A series of amphiphilic co‐networks (ACNs) is prepared in a straightforward way via thiolactone chemistry by crosslinking a multivalent thiolactone‐functional poly(dimethylsiloxane) building block with poly(ethylene glycol) diacrylates. Formation of the networks is triggered by the addition of an amine, of which the nucleophilicity and steric bulk control the curing kinetics. Furthermore, some of the crosslinks can be sacrificed to introduce a fluorescent group or dye via a thia‐Michael addition, without affecting the bulk mechanical properties and swelling capabilities. The obtained ACNs exhibit a unique set of properties because of their nanophase separation, resulting in hydrophilic PEG and hydrophobic PDMS phases. Hence, swelling in both water and organic solvents is observed, of which the extent can be tuned by varying the overall PEG content. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2019 , 57, 322–333     

Solvent-tunable binding of hydrophilic and hydrophobic guests by amphiphilic molecular baskets

[reaction: see text] Responsive amphiphilic molecular baskets were obtained by attaching four facially amphiphilic cholate groups to a tetraaminocalixarene scaffold. Their binding properties can be switched by solvent changes. In nonpolar solvents, the molecules utilize the hydrophilic faces of the cholates to bind hydrophilic molecules such as glucose derivatives. In polar solvents, the molecules employ the hydrophobic faces of the cholates to bind hydrophobic guests. A water-soluble basket can bind polycyclic aromatic hydrocarbons including anthracene, pyrene, and perylene. The binding free energy (-deltaG) ranges from 5 to 8 kcal/mol and is directly proportional to the surface area of the aromatic hosts. Binding of both hydrophilic and hydrophobic guests is driven by solvophobic interactions.     

Dual cross-linked networks hydrogels with unique swelling behavior and high mechanical strength: based on silica nanoparticle and hydrophobic association

A series of physically cross-linked hydrogels composed poly(acrylic acid) and octylphenol polyoxyethylene acrylate with high mechanical strength are reported here with dual cross-linked networks that formed by silica nanoparticles (SNs) and hydrophobic association micro-domains (HAMDs). Acrylic acid (AA) and octylphenol polyoxyethylene acrylate with 10 ethoxyl units (OP-10-AC) as basic monomers in situ graft from the SNs surface to build poly(acrylic acid) hydrophilic backbone chains with randomly distributed OP-10-AC hydrophobic side chains. The entanglements among grafted backbone polymer chains and hydrophobic branch architecture lead to the SNs and HAMDs play the role of physical cross-links for the hydrogels network structure. The rheological behavior and polymer concentration for gelation process are measured to examine the critical gelation conditions. The correlation of the polymer dual cross-linked networks with hydrogels swelling behavior, gel-to-sol phase transition, and mechanical strength are addressed, and the results imply that the unique dual cross-linking networks contribute the hydrogels distinctive swelling behavior and excellent tensile strength. The effects of SNs content, molecular weight of polymer backbone, and temperature on hydrogels properties are studied, and the results indicate that the physical hydrogel network integrity is depended on the SNs and HAMDs concentration.