A novel one-step hyper-cross-linking method, using 1,2-dichloroethane (DCE) and 1,6-dichlorohexane (DCH) cross-linkers, expands the micropore volume of commercial styrenic polymers. Performance of virgin and modified polymers was evaluated by measuring hexane, toluene, and methyl-ethyl-ketone (MEK) adsorption capacity, adsorption/desorption kinetics, and desorption efficiency. Hyper-cross-linked polymers have up to 128% higher adsorption capacity than virgin polymers at P/P₀ = 0.05 due to micropore volume increases up to 330%. Improvements are most pronounced with the DCE cross-linker. Hyper-cross-linking has minimal impact on hexane adsorption kinetics, but adsorption rates for toluene and MEK decrease by 6-41%. Desorption rates decreased (3-36%) for all materials after hyper-cross-linking, with larger decreases for DCE hyper-cross-linked polymers due to smaller average pore widths. For room temperature desorption, 20-220% more adsorbate remains in hyper-cross-linked polymers after regeneration compared to virgin materials. DCE hyper-cross-linked polymers have 13-92% more residual adsorbate than DCH counterparts. Higher temperatures were required for DCE hyper-cross-linked polymers to completely desorb VOCs compared to the DCH hyper-cross-linked and virgin counterparts. Results show that the one-step hyper-cross-linking method for modifying styrenic polymers improves adsorption capacity because of added micropores, but decreases adsorption/desorption kinetics and desorption efficiency for large VOCs due to a decrease in average pore width.

一种新颖的一步式超交联方法，使用1,2-二氯乙烷（DCE）和1,6-二氯己烷（DCH）交联剂，扩大了商业苯乙烯聚合物的微孔体积。通过测量己烷，甲苯和甲基乙基酮（MEK）的吸附容量，吸附/解吸动力学和解吸效率来评估原始聚合物和改性聚合物的性能。在P / P _0时，超交联聚合物的吸附能力比纯聚合物高128％。 由于微孔体积增加最多= 330％，因此= 0.05。DCE交联剂的改进最为明显。超交联对己烷的吸附动力学影响很小，但是甲苯和MEK的吸附率降低了6-41％。超交联后，所有材料的解吸率均下降（3-36％），DCE超交联聚合物的解吸率下降幅度较大，原因是平均孔径较小。对于室温解吸，与原始材料相比，再生后超交联聚合物中保留的吸附物多20-220％。DCE超交联聚合物的残留吸附物比DCH对应物多13-92％。与DCH超交联的和原始的对应物相比，DCE超交联的聚合物需要更高的温度才能完全解吸VOC。