TY - JOUR

T1 - Sustainable novel membranes based on carboxymethyl cellulose modified with ZIF-8 for isopropanol/water pervaporation separation

AU - Кузьминова, Анна Игоревна

AU - Дмитренко, Мария Евгеньевна

AU - Дубовенко, Роман Русланович

AU - Микулан, Анна Ярославовна

AU - Степанова, Анастасия Сергеевна

AU - Пузикова, Маргарита Егоровна

AU - Раковская, Надежда Станиславовна

AU - Мазур, Антон Станиславович

AU - Шурухина, Анна Владимировна

AU - Рудакова, Аида Витальевна

AU - Емелин, Алексей Владимирович

AU - Su, Rongxin

AU - Пенькова, Анастасия Владимировна

PY - 2025/4/23

Y1 - 2025/4/23

N2 - The present study investigates the potential of novel mixed matrix membranesthat are formed from the biopolymer carboxymethyl cellulose (CMC) and the metal–organic framework ZIF-8 to improve the pervaporation dehydration of isopropanol. The effect of ZIF-8 content variation and porous substrate selection (comprising cellulose acetate (CA) and polyacrylonitrile) on dense and supported membrane properties is systematically investigated using multiple analytical techniques. It is found that ZIF-8 incorporation alters the membrane structure (confirmed by FTIR and NMR), increases surface roughness (observed via SEM and AFM), enhances swelling degree (obtained by swelling measurements), improves surface hydrophobicity (determined by contact angle analysis), and elevates thermal stability (verified by TGA). Quantum chemical calculations are used to validate the interactions between the polymer matrix, modifier, and feed components. The transport properties of developed membranes are evaluated through the dehydration of isopropanol via pervaporation. The cross-linked supported CMC membrane with 10 wt% ZIF-8 prepared on the CA substrate has the optimal performance: permeation flux of 0.136–1.968 kg/(m2h) and >92 wt% water in the permeate via the dehydration of isopropanol (water content 12–100 wt%) at 22 ◦C.

AB - The present study investigates the potential of novel mixed matrix membranesthat are formed from the biopolymer carboxymethyl cellulose (CMC) and the metal–organic framework ZIF-8 to improve the pervaporation dehydration of isopropanol. The effect of ZIF-8 content variation and porous substrate selection (comprising cellulose acetate (CA) and polyacrylonitrile) on dense and supported membrane properties is systematically investigated using multiple analytical techniques. It is found that ZIF-8 incorporation alters the membrane structure (confirmed by FTIR and NMR), increases surface roughness (observed via SEM and AFM), enhances swelling degree (obtained by swelling measurements), improves surface hydrophobicity (determined by contact angle analysis), and elevates thermal stability (verified by TGA). Quantum chemical calculations are used to validate the interactions between the polymer matrix, modifier, and feed components. The transport properties of developed membranes are evaluated through the dehydration of isopropanol via pervaporation. The cross-linked supported CMC membrane with 10 wt% ZIF-8 prepared on the CA substrate has the optimal performance: permeation flux of 0.136–1.968 kg/(m2h) and >92 wt% water in the permeate via the dehydration of isopropanol (water content 12–100 wt%) at 22 ◦C.

KW - ZIF-8

KW - biopolymer

KW - carboxymethyl cellulose

KW - green membrane

KW - isopropanol dehydration

KW - pervaporation

KW - sustainable development

UR - https://www.mendeley.com/catalogue/e657959b-6eaf-3cd2-b8ad-28e23ecf5b89/

U2 - 10.3390/su17093801

DO - 10.3390/su17093801

M3 - Article

VL - 17

JO - Sustainability

JF - Sustainability

SN - 2071-1050

IS - 9

M1 - 3801

ER -