Functional Materials Group, School of Physical Sciences, Ingram Building, University of Kent , Canterbury CT2 7NH, United Kingdom.
Defense Science and Technology Laboratory (DSTL) , Porton Down, Salisbury, Wiltshire SP4 0JQ, United Kingdom.
ACS Appl Mater Interfaces. 2017 Sep 20;9(37):31335-31339. doi: 10.1021/acsami.7b09188. Epub 2017 Sep 5.
We report a facile method for the absorption (characterized by the weight/weight swelling degree, Q) of a variety of chemical warfare agents (CWAs); including sulfur mustard (HD) (Q = 40) and V-series (VM, VX, i-Bu-VX, n-Bu-VX) of nerve agents (Q ≥ 45) and a simulant, methyl benzoate (Q = 55), through the use of a poly(styrene-co-vinyl benzyl chloride-co-divinylbenzene) lightly cross-linked poly high internal phase emulsion (polyHIPE). By varying the vinyl benzyl chloride (VBC) content and the volume of the internal phase of the precursor emulsion it is demonstrated that absorption is facilitated both by the swelling of the polymer and the uptake of liquid in the pores. In particular the sample prepared from a 95% internal emulsion water content showed rapid swelling (<5 min to total absorption) and the ability to swell both from a monolithic state and from a compressed state, making these systems ideal practical candidates for the rapid immobilization of CWAs.
我们报告了一种简便的方法来吸收各种化学战剂（CWA）；包括芥子气（HD）（Q=40）和 V 系列（VM、VX、i-Bu-VX、n-Bu-VX）神经毒剂（Q≥45）和模拟物苯甲酸甲酯（Q=55），通过使用聚（苯乙烯-共-乙烯基苄基氯-共-二乙烯基苯）轻度交联的聚高内相乳液（polyHIPE）。通过改变乙烯基苄基氯（VBC）的含量和前驱体乳液的内相体积，可以证明吸收是通过聚合物的溶胀和孔内液体的吸收来促进的。特别是由 95%内相乳液水含量制备的样品显示出快速溶胀（<5 分钟即可完全吸收）以及从整体状态和压缩状态溶胀的能力，使这些体系成为快速固定 CWA 的理想实用候选物。
