Selective adsorption of biodegradable polymaleic acid for regulating the wettability difference at the fine coal–kaolinite interface - Wei Xiao; Yuping Fan; Xianshu Dong; Xiaomin Ma; Yuanpeng Fu; Yanze Mu; Maoqing Yang; Pengcheng Wen; Kangpei Jin; Dehao Li (Minerals Engineering, 2026)