HomeChemistryBio-based solvents for polyolefin dissolution and membrane fabrication: from plastic waste to...

Bio-based solvents for polyolefin dissolution and membrane fabrication: from plastic waste to value-added supplies

Membrane expertise is a low-footprint and extremely environment friendly industrial separation course of. Whereas extra secure membranes may considerably contribute to modernizing the chemical business, sustainability have to be seen holistically. Polymer sources, solvents, and recycling methods that adhere to the strategic ideas of the round financial system needs to be thought-about on the membrane design stage. Recycling plastic waste into separation membranes might help remediate the environmental affect of the present plastic air pollution. Polyolefins are probably the most manufactured and used polymer household, and their excessive chemical resistance and low value are engaging for membrane preparation. Nonetheless, their restricted solubility in primarily non-renewable solvents at excessive temperatures restricts their processability and recycling. On this work, we current the usage of polypropylene (PP) and low-density polyethylene (LDPE) because the supply of membrane preparation by their dissolution in two bio-based and renewable solvents (α-pinene and D-limonene). The thermal properties and section separation habits have been studied and section diagrams have been obtained. Liquid–liquid section separation and spherulitic morphology have been noticed for the three studied methods. PP membranes have been obtained by a thermally induced section separation (TIPS) course of using α-pinene as a solvent, and meals packaging plastic waste or commercially out there PP pellets within the polymer dope resolution. The obtained membranes have been examined for water-in-oil emulsion separations. The affect of the polymer content material and the quenching media on the morphology, mechanical and thermal properties, and water contact angle was investigated. PP membranes have been fabricated with 20–30 wt% polymer contents utilizing water at 4 °C and 20 °C as quenching media. The contact angles have been greater than 150° underneath oil enabled environment friendly water-in-toluene emulsion separation, the place approx. 95% water rejection and a mean of 99.97% toluene purity have been achieved.

Graphical abstract: Bio-based solvents for polyolefin dissolution and membrane fabrication: from plastic waste to value-added materials

RELATED ARTICLES

LEAVE A REPLY

Please enter your comment!
Please enter your name here

Most Popular

Recent Comments