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2 protocols using anhydrous tetrahydrofuran thf

1

Synthesis of Polyurethane Polymer

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Isophorone diisocyanate (IPDI), 1,1′-Binaphthalene-2,2′-diol (BINOL), and 2,2-Dimethylol propionic acid (DMPA) were purchased from Aladdin Co., Ltd. (Shanghai, China). Polycarbonate diol 1000 (PCDL1000) was available from Jining Huakai Resin Co., Ltd. (Jining, China) and was vacuum dried at 60 °C for about 24 h prior to use. In addition, 1,4-Butanediol (BDO) and triethylamine (TEA) were procured from Sinopharm Chemical Reagent Co., Ltd. (Shanghai, China). Anhydrous tetrahydrofuran (THF) was bought from Sinopharm Chemical Reagent Co., Ltd. and always kept with 4A molecular sieve before use.
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2

Synthesis of Amino-Functionalized Silica Nanoparticles

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NH3·H2O (AR, 25–28%) was purchased from Xi’an Sanpu Chemical Reagent Co., Ltd. (Xi’an, China). Aminopropyltriethoxysilane (APTES) was purchased from Energy Chemical (Shanghai, China). EGTA, trimethyl [3-(trimethoxysilyl) propyl] ammonium chloride (TMA) (≈50% methanol), TPP, N,N-dicyclohexyl carbonate diimide (DCC), 4-dimethylaminopyridine (DMAP), 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydro (EDC), N-hydroxysuccinimide (NHS), and 1,3,5-trimethylbenzene (TMB) were obtained from Shanghai Macklin Biochemical Co. Tetraethylorthosilicate (TEOS, 99.0%), anhydrous tetrahydrofuran (THF) was purchased from Sinopharm Chemical Reagent Co., Ltd. (Xi’an, China). Hexadecyl trimethyl ammonium bromide (CTAB) and PEG (4000) was purchased from Tianjin Kemiou Chemical Reagent Co., Ltd. (Tianjin, China). Dimethyl sulfoxide (DMSO), toluene, hydrochloric acid, and sodium hydroxide were purchased from Tianjin HengXing Chemical Reagent Co., Ltd. (Tianjin, China). 3-bromopropionic acid was purchased from Shanghai Aladdin Bio-Chem Technology Co., LTD (Shanghai, China).
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