当前位置：
X-MOL 学术
›
Ind. Eng. Chem. Res.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Surface-Initiated Metal-Free Photoinduced ATRP of 4-Vinylpyridine from SiO2 via Visible Light Photocatalysis for Self-Healing Hydrogels
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-12-11 , DOI: 10.1021/acs.iecr.8b05020
Anyao Ma 1 , Jiakang Zhang 1 , Na Wang 1 , Liangjiu Bai 1 , Hou Chen 1 , Wenxiang Wang 1 , Huawei Yang 1 , Lixia Yang 1 , Yuzhong Niu 1 , Donglei Wei 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-12-11 , DOI: 10.1021/acs.iecr.8b05020
Anyao Ma 1 , Jiakang Zhang 1 , Na Wang 1 , Liangjiu Bai 1 , Hou Chen 1 , Wenxiang Wang 1 , Huawei Yang 1 , Lixia Yang 1 , Yuzhong Niu 1 , Donglei Wei 1
Affiliation
|
Robust and self-healable nanocomposite hydrogels were realized by the encapsulation of components of photoinduced electron transfer–atom transfer radical polymerization (PET–ATRP) into surface-modified silica nanoparticles (SiO2). The prepared SiO2@P4VP was in the form of self-healing nanocomposite hydrogels, where 4-vinylpyridine (4VP) was polymerized through PET–ATRP with organic photocatalyst Rhodamine B. The modified nanoparticles were characterized by X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), and Fourier transform infrared (FT-IR) spectroscopy. The nanocomposite hydrogels can be healed rapidly and autonomously without any stimulation at ambient temperature. Specifically, the nanocomposite hydrogels have a tensile strength of about 2.90 MPa, which recovered to 77.0% after 12 h, and an elongation at break of about 730%. These self-healing hydrogels with cheap raw material, possessing better strength and self-healing performance, will have broad prospects.
中文翻译：
通过可见光催化自SiO 2引发表面活化的无金属光诱导的4-乙烯基吡啶的4-乙烯基吡啶自愈水凝胶
通过将光致电子转移-原子转移自由基聚合（PET-ATRP）的组分封装到表面改性的二氧化硅纳米粒子（SiO 2）中，实现了坚固且可自愈的纳米复合水凝胶。制备的SiO 2@ P4VP是自修复的纳米复合水凝胶，其中4-乙烯基吡啶（4VP）通过PET-ATRP与有机光催化剂罗丹明B聚合。改性的纳米颗粒通过X射线光电子能谱（XPS），热重分析（ TGA），透射电子显微镜（TEM）和傅立叶变换红外（FT-IR）光谱。纳米复合水凝胶可以在环境温度下快速，自主地愈合，而无任何刺激。具体地，纳米复合水凝胶具有约2.90MPa的拉伸强度，其在12h后恢复至77.0％，以及断裂伸长率约为730％。这些具有廉价原料，具有更好的强度和自修复性能的自修复水凝胶将具有广阔的前景。
更新日期：2018-12-12
中文翻译：
通过可见光催化自SiO 2引发表面活化的无金属光诱导的4-乙烯基吡啶的4-乙烯基吡啶自愈水凝胶
通过将光致电子转移-原子转移自由基聚合（PET-ATRP）的组分封装到表面改性的二氧化硅纳米粒子（SiO 2）中，实现了坚固且可自愈的纳米复合水凝胶。制备的SiO 2@ P4VP是自修复的纳米复合水凝胶，其中4-乙烯基吡啶（4VP）通过PET-ATRP与有机光催化剂罗丹明B聚合。改性的纳米颗粒通过X射线光电子能谱（XPS），热重分析（ TGA），透射电子显微镜（TEM）和傅立叶变换红外（FT-IR）光谱。纳米复合水凝胶可以在环境温度下快速，自主地愈合，而无任何刺激。具体地，纳米复合水凝胶具有约2.90MPa的拉伸强度，其在12h后恢复至77.0％，以及断裂伸长率约为730％。这些具有廉价原料，具有更好的强度和自修复性能的自修复水凝胶将具有广阔的前景。
京公网安备 11010802027423号