Plastic waste recycling

Dalen, M. B.; Nasir, Taimoor Ahmed

doi:10.4314/swj.v4i1.51829

Cited by 2 publications

(3 citation statements)

References 1 publication

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“…Major challenges are immiscibility between recyclate and virgin polymer, degradation of recyclate due to various stresses during prior processing and use, and differences in processing requirements. For example, mixing waste plastics collected from landfill to virgin resin has been found to dramatically decrease the tensile properties of cast films . Likewise, even low quantities of biodegradable plastics such as starch, polylactide or poly(butylene adipate‐ co ‐terephthalate) in polyethylene waste streams can have a negative impact on recyclate resulting in film defects and poor appearance .…”

Section: Introductionmentioning

confidence: 99%

Mechanical recycling of nanocellulose containing multilayer packaging films

Vartiainen

Pasanen

Kenttä

et al. 2018

J of Applied Polymer Sci

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The aim of this study was to demonstrate mechanical recycling of low density polyethylene (LDPE) films coated with a thin layer of cellulose nanofibrils (CNFs). CNF acts as an effective barrier against oxygen and mineral oil residues. Two different CNF grades were tested, and both were applied onto plasma activated LDPE film using a pilot coating line. The coated films were shredded with the help of liquid nitrogen, compacted and compounded with virgin LDPE and compatibilizer, and processed into cast films and injection molded test specimens. The CNF coatings were completely blent as microscale agglomerates in the LDPE matrix. The effect of these agglomerates on the barrier and heat sealing properties was statistically insignificant compared to recycled uncoated LDPE. The mechanical properties were only moderately changed. CNF‐coated LDPE films can therefore be recycled back into films without sacrificing the characteristic properties of the base polymer. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46237.

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Section: Introductionmentioning

confidence: 99%

Mechanical recycling of nanocellulose containing multilayer packaging films

Vartiainen

Pasanen

Kenttä

et al. 2018

J of Applied Polymer Sci

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“…Mechanical recycling refers to processes which involve sorting, melting, shredding or granulation of waste plastics. Most of the work on mechanical recycling has concentrated on separation of the different types of plastics as a pretreatment for recycling [7,8], raw materials burdening [11], and thermal degradation of plastics [12]. Chemical or feedstock recycling involves a range of plastic recovery techniques which break down polymers into their constituent monomers.…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, recycling of plastics helps preserve natural resources and reduces consumption of energy and emissions of CO 2 , NO and SO 2 gases. Recycling of plastics is a challenging task [7][8][9][10], particularly in view of the diversity of sources of waste plastics, higher potential for contamination of plastics wastes and a wide range of requirements for the intended products. There are two ways of recycling.…”

Section: Introductionmentioning

confidence: 99%

Effect of Proportion of Home and External Scrap on the Mechanical Properties of Recycled Pvc: A Comparative Study

Uddin¹,

Gulshan

Kurny³

2015

J. Mech. Eng. Sci.

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Raw material powder mixtures have been prepared with PVC resin, unplasticized polyvinylchloride (uPVC) scrap and additives. A twin screw extruder has been used to make pipe for sample preparation from the mixture. Domestic and external uPVC scrap were formulated and blended with PVC resin to form melt compound. Domestic samples designated as DS-10, DS-20, DS-30, DS-40, DS-50 and DS-100 have been prepared by blending 10, 20, 30, 40, and 50 phr and 100% uPVC domestic scrap with PVC resin and various additives, followed by extrusion, flattening and machining. Following a similar procedure, external samples such as ES-10, ES-20, ES-30, ES-40, ES-50 and ES-100 have been prepared using external uPVC scrap. The effects of the proportions of uPVC scrap in the raw material mix on the mechanical properties such as break stress (BS), % elongation at break, flexural yield strength [1], impact strength (IS) and Shore hardness were investigated. The maximum decrease in break stress is 11.40% for 20 phr domestic scrap, while in samples containing external scrap this decrease is 15.71% for 40 phr scrap. The minimum and maximum reduction in IS values of DS are recorded 1.0% for DS-10 and 27.4% for DS-40, respectively, whereas the minimum and maximum decrease in IS values of ES recorded are 9.6% for ES-10 and 39.2% for ES-50, respectively. The minimum and maximum increase in hardness values of DS are recorded as 0.07% for DS-40 and 2.8% for DS-10, respectively, whereas the minimum and maximum reduction in hardness values of ES are recorded as 1.2% for ES-50 and 2.2% for ES-20, respectively. The mechanical properties of samples were found to deteriorate with increasing quantity of scrap in the raw material mix, the effects of external scrap being more prominent.

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Plastic waste recycling

Cited by 2 publications

References 1 publication

Mechanical recycling of nanocellulose containing multilayer packaging films

Mechanical recycling of nanocellulose containing multilayer packaging films

Effect of Proportion of Home and External Scrap on the Mechanical Properties of Recycled Pvc: A Comparative Study

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