Novel high temperature polymer electrolyte membranes (HT-PEMs) are fabricated from commercial and low-cost poly (ether ketone cardo) (PEK-Cardo). Rather than normal chloromethylation quaternization procedure to introduce basic groups into (arylene ether)s, three different long side-chain grafted PEK-Cardo through a facile one-step lactamization between the cardo phenolphthalein type moiety in a...

The applicability of cotton-bleached soda pulp (C-BSP) was investigated as a raw material for manufacturing cationic nano-fibrillated cellulose (NFC) via quaternization anionic NFC using glycidyl-trimethyl-ammonium chloride (GMA). prepared by beating and micro-grinding C-BSP, performed post treatment to induce charge reversal in NFC. characteristics manufactured C-BSP hardwood-bleached kraft (H...

The present study determined the effect of organically quaternizing either of the two tertiary nitrogen sites of nicotine to assess the in vivo effects of the permanently ionized states of the synthesized N-[14C]methylnicotines on brain uptake in rat after intracarotid injection. Male Sprague-Dawley rats were used to measure the brain uptake index (BUI) by single-pass clearance in brain after r...

The reactions of cyclodiphosphazane derivatives cis-{(t)BuN(H)P(μ-N(t)Bu)2PN(H)(t)Bu} (1), cis-{MeN(C4H8N)P(μ-N(t)Bu)2P(NC4H8Me)} (2) and {(Me2NCH2CH2O)P(μ-N(t)Bu)2P(OCH2CH2NMe2)} (3) with methyl iodide and methyl triflate and their subsequent reactions with elemental sulfur and selenium are reported. Interestingly, the reactions of 1-3 with an excess of methyl iodide resulted in quaternising o...

Diffusion dialysis (DD) employing anion exchange membranes (AEMs) presents an attractive opportunity for acid recovery from acidic wastewater. However, challenges exist to make highly permeable AEMs due their low coefficient (Uacid). Here, a series of porous and fabricated based on chloromethyl polyethersulfone (CMPES) membrane substrate with crosslinking quaternization treatments is reported. ...