發(fā)布時間：2018-03-20 01:14

  本文選題：分子印跡聚合物　切入點：中空雙模板　出處：《天津工業(yè)大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：分子印跡聚合物(MIPs)作為一種功能高分子材料,以其獨特的特異識別性和高效選擇性被應(yīng)用于各個領(lǐng)域。本文依據(jù)表面分子印跡的原理,以Si02為固相載體基質(zhì),并通過3-(甲基丙烯酰氧)丙基三甲氧基硅烷(MPS)對其表面進(jìn)行乙烯基改性,以甲基丙烯酸(MAA)為功能單體,無需加入引發(fā)劑,而是采用輻射引發(fā)聚合的方法制備出苯并噻吩(BT)、二苯并噻吩(DBT)雙模板分子印跡聚合物,最后用氫氟酸去除Si02內(nèi)核得到具有中空結(jié)構(gòu)的聚合物(H-MIP)。實驗中考察了輻射劑量對聚合物微球形態(tài)的影響,并通過FT-IR、SEM、TEM、TGA對其結(jié)構(gòu)進(jìn)行了表征,測試印跡聚合物的吸附性能與選擇性能。結(jié)果表明,H-MIP比MIPs表現(xiàn)出更高的吸附性能和更好的選擇性能,對BT與DBT吸附容量分別為195μmol/g和203μmol/g。為石油行業(yè)中燃油脫硫提供了一個很好的方法�；谀げ牧铣杀镜�、能耗少、效率高、識別性好、制備過程簡單、后處理容易的特點,本文又以PSF為成膜材料,N,N二甲基甲酰胺為鑄膜液,MIPs為填充物,采用溶液相轉(zhuǎn)換法合成了印跡共混膜。實驗過程中探究了成膜材料、凝固浴溫度及膜濃度對膜結(jié)構(gòu)的影響,并利用膜性能評價裝置和掃描電子顯微鏡考察了成膜性能,研究了共混膜的選擇吸附能力。結(jié)果表明,PSF的含量在25%,凝固浴溫度在35℃時最適宜平板刮膜,并且對目標(biāo)物有很高的吸附量,從而可實現(xiàn)對結(jié)構(gòu)類似物的初步分離。
[Abstract]:As a functional polymer, molecularly imprinted polymer (MIP) has been applied in various fields for its unique specificity and high selectivity. According to the principle of surface molecular imprinting, Si02 is used as solid matrix. The surface of 3-( methacrylol) propyl trimethoxysilane (MPS) was modified by vinyl group, and MAA was used as functional monomer without adding initiator. Instead, two template molecularly imprinted polymers of benzothiophene (BTN) and dibenzothiophene (DBT) were prepared by radiation-initiated polymerization. In the end, the hollow structure of Si02 core was obtained by removing hydrofluoric acid. The effect of radiation dose on the morphology of polymer microspheres was investigated, and the structure of the polymer was characterized by FT-IRN SEMMA-TEMGA-TGA. The adsorption and selective properties of imprinted polymers were tested. The results showed that the adsorption and selectivity of H-MIP were higher than those of MIPs. The adsorption capacities of BT and DBT are 195 渭 mol/g and 203 渭 mol / g, respectively, which provide a good method for oil desulfurization in petroleum industry. Based on the characteristics of low cost of membrane material, low energy consumption, high efficiency, good recognition, simple preparation process and easy post-treatment, In this paper, the imprinted blend films were synthesized by using PSF as the film-forming material and dimethylformamide as the filling material. The effects of the film forming material, coagulation bath temperature and membrane concentration on the membrane structure were investigated. The film forming performance was investigated by means of membrane performance evaluation device and scanning electron microscope. The selective adsorption capacity of the blend membrane was studied. The results showed that the content of PSF was 25 and the solidification bath temperature was 35 鈩，

本文編號：1636849