We aimed to develop a sustainable adsorbent for bisphenol A (BPA), an endocrine disruptor that seriously threatens human health. First, microcrystalline cellulose (MCC) was reacted with 2-bromoisobutyrylbromide to obtain a surface initiator (SI) for the grafting of polystyrene (PS), poly(lauryl methacrylate) (PLMA), and poly(N,N-dimethylaminoethyl methacrylate) (PDM) through ARGET-ATRP. These polymers may have favorably interacted with BPA, which led to its removal. SIs were characterized by FTIR and XPS to corroborate the grafting of 2-bromoisobutyryl and determine its abundance. X-ray diffraction analysis indicated retained crystal morphology with decreased MCC crystallinity. FTIR, thermogravimetric, and elemental analyses confirmed the grafting of MCC with polymers and revealed their composition. PS and PLMA had a minor effect on the crystallinity and morphology of MCC microfibers, whereas grafting PDM decreased the crystallinity of cellulose and the particle size. MCC grafted with polymers were tested as adsorbents of BPA by measuring the equilibrium uptake and removal through column filtration. PDM was found to endow cellulose with superior capacity of removing BPA, which was enhanced with increased amount of grafted polymer. A comparison of MCC grafted with PDM with activated carbon as adsorbents of BPA suggested the superior performance of the developed materials based on the largest maximum uptake.

我们旨在为双酚A（BPA）开发一种可持续的吸附剂，双酚A是一种严重威胁人类健康的内分泌干扰物。首先，微晶纤维素（MCC）与2-溴异丁酰溴反应，得到表面引发剂（SI），用于接枝聚苯乙烯（PS），聚甲基丙烯酸月桂酯（PLMA）和聚（N，N-通过ARGET-ATRP（甲基丙烯酸二甲基氨基乙酯）（PDM）。这些聚合物可能与BPA发生了良好的相互作用，从而导致了BPA的去除。通过FTIR和XPS对SI进行表征，以证实2-溴异丁酰的接枝并确定其丰度。X射线衍射分析表明保留的晶体形态具有降低的MCC结晶度。FTIR，热重和元素分析证实了MCC与聚合物的接枝，并揭示了其组成。PS和PLMA对MCC超细纤维的结晶度和形态影响不大，而接枝PDM则降低了纤维素的结晶度和粒径。通过测量平衡吸收和通过柱过滤的去除，测试了接枝有聚合物的MCC作为BPA的吸附剂。发现PDM使纤维素具有出色的去除BPA的能力，随着接枝聚合物数量的增加而增强。对以活性炭作为BPA吸附剂的PDM接枝的MCC的比较表明，基于最大的最大吸收量，所开发材料的优越性能。