Amphoteric-starch-functionalized palygorskite for calcium and magnesium ion regulation and paper-strength enhancement in wastepaper papermaking - Jianrong Da; Susu Yin; Ruixiang Xie; Yao Xu; Guanghui Lu; Huiyang Bian; Shumei Wang; Hongqi Dai; Tingting Xu (Applied Clay Science, 2026)