Synthesis of Modified TiO2 Nanoparticles with Polyacrylonitrile and Poly(hydroxyethyl acrylate) via ATRP,ChemistrySelect

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Synthesis of Modified TiO2 Nanoparticles with Polyacrylonitrile and Poly(hydroxyethyl acrylate) via ATRP
ChemistrySelect ( IF 1.9 ) Pub Date : 2020-04-21 , DOI: 10.1002/slct.202000134
Yazhen Wang _{1,

2} , Li Liu ₁ , Shengyue Jiang ₁ , Shuang Li ₃ , Tianyu Lan ₃ , Liwu Zu ₃ , Shaobo Dong ₃

Affiliation

The modified TiO₂ nanoparticles (TiO₂ NPs) with diblock copolymer were successfully synthesized via surface‐initiated atom transfer radical polymerization (SI‐ATRP). The modified TiO₂ contained the ‐NH₂ group (TiO₂‐APTES) was obtained by 3‐aminopropyltriethoxysilane (APTES) as a coupling agent. Bromine modified TiO₂ NPs (TiO₂‐Br), the ATRP initiator was prepared by the reaction of ‐NH₂ in TiO₂‐APTES with 2‐bromoisobutyryl bromide (BiBB). The block copolymer of the polyacrylonitrile and poly(hydroxyethyl acrylate) (PAN‐b‐PHEA) on the TiO₂ surface was synthesized with TiO₂‐Br as initiator via ATRP. The differential scanning calorimetry (DSC) analysis revealed two Tg values corresponding to two blocks, which indicated two polymer chains of the modified TiO₂. The result of Gel Permeation Chromatography (GPC) shown increasing molecular weight of the PAN‐b‐PHEA also demonstrated the block copolymer structure.

中文翻译：

聚丙烯腈和聚丙烯酸羟乙酯的ATRP合成改性TiO2纳米粒子

通过表面引发的原子转移自由基聚合（SI-ATRP）成功地合成了具有二嵌段共聚物的改性TiO ₂纳米颗粒（TiO ₂ NPs）。通过3-氨基丙基三乙氧基硅烷（APTES）作为偶联剂获得的改性的TiO ₂含有-NH ₂基团（TiO ₂ -APTES）。溴改性的TiO ₂ NP（TiO ₂ -Br），ATRP引发剂是由TiO ₂ -APTES中的-NH ₂与2-溴异丁酰溴（BiBB）反应制得的。用TiO ₂合成了聚丙烯腈和聚丙烯酸羟乙酯（PAN-b-PHEA）在TiO ₂表面的嵌段共聚物₂ ‐Br通过ATRP作为发起方。差示扫描量热法（DSC）分析揭示了对应于两个嵌段的两个Tg值，其表明了改性的TiO _2的两个聚合物链。凝胶渗透色谱（GPC）的结果表明PAN-b-PHEA的分子量增加，也表明了嵌段共聚物的结构。

更新日期：2020-04-22

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