scholarly journals From PET Waste to Novel Polyurethanes

10.5772/31642 ◽  
2012 ◽  
Author(s):  
Gity Mir Mohamad Sadeghi ◽  
Mahsa Sayaf
Keyword(s):  
Pet Waste

Depolymerization of PET waste to potentially applicable aromatic amides: Their characterization and DFT study

2017 ◽  
Vol 134 (31) ◽  
pp. 45153 ◽  
Author(s):  
Meenu Teotia ◽  
Nazia Tarannum ◽  
Rakesh Kumar Soni
Keyword(s):  
Dft Study ◽  
Pet Waste

scholarly journals Beverage bottle capacity, packaging efficiency, and the potential for plastic waste reduction

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
R. Becerril-Arreola ◽  
R. E. Bucklin
Keyword(s):  
Product Category ◽  
Plastic Waste ◽  
Waste Reduction ◽  
Plastic Pollution ◽  
Local Data ◽  
Pet Waste ◽  
Pet Bottles ◽  
Enormous Amount ◽  
Packaging Efficiency ◽  
The U.S

AbstractPlastic pollution is a pressing issue because authorities struggle to contain and process the enormous amount of waste produced. We study the potential for reducing plastic waste by examining the efficiency with which different polyethylene terephthalate (PET) bottles deliver beverages. We find that 80% of the variation in bottle weight is explained by bottle capacity, 16% by product category, and 1% by brand. Bottle weight is quadratic and convex function of capacity, which implies that medium capacity bottles are most efficient at delivering consumable product. Local data on PET bottle sales and municipal waste recovery validate the findings. A 20% shift in consumption from smaller to larger bottles could reduce the production of PET waste by over 10,000 t annually in the U.S. alone.

Biomass Waste-Derived Recyclable Heterogeneous Catalyst for Aqueous Aldol Reaction and Depolymerization of PET Waste

2021 ◽  
Author(s):  
Z. T Laldinpuii ◽  
C Lalmuanpuia ◽  
Samson Lalhmangaihzuala ◽  
Vanlalngaihawma Khiangte ◽  
Zodinpuia Pachuau ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Aldol Reaction ◽  
Orange Peel ◽  
Biomass Waste ◽  
Pet Waste ◽  
Recyclable Heterogeneous Catalyst

In this work, we discuss the valorization of biomass waste-derived orange peel ash (OPA) by exploring its applicability as a heterogeneous catalyst in aqueous aldol reaction and demonstrating its versatility...

Synthesis of two PET waste derived bisacrylic and bisallylic monomers and their potential use as crosslinking agents and dental resin composites

2014 ◽  
Vol 132 (8) ◽  
pp. n/a-n/a ◽  
Author(s):  
Juan Coreño Alonso ◽  
Antonio Cruz Aguilar ◽  
Carlos Enrique Cuevas-Suárez ◽  
Rosa Ángeles Vázquez García ◽  
Ana María Herrera-González
Keyword(s):  
Resin Composites ◽  
Dental Resin ◽  
Pet Waste ◽  
Dental Resin Composites ◽  
Potential Use ◽  
Crosslinking Agents

Polyurethane resin derived from polyol of palm olein and recycled poly(ethylene terephthalate)

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Abbas Ahmad Adamu ◽  
Norazilawati Muhamad Sarih ◽  
Seng Neon Gan
Keyword(s):  
Thermal Stability ◽  
Palm Olein ◽  
Ethylene Terephthalate ◽  
Alkali Resistance ◽  
Pet Waste ◽  
Content Type ◽  
Pet Bottles ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Excellent Adhesion

Purpose Poly(ethylene terephthalate) (PET) waste from soft drink bottles was incorporated into palm olein alkyd to produce new polyol for use in polyurethane resins as surface protection on metal surfaces. Design/methodology/approach Alkyd was prepared from palm olein, glycerol and phthalic anhydride. PET underwent simultaneous glycolysis and transesterification reactions with the alkyd. Varying the amount of PET has led to polyols with different viscosities. Polyurethane resins were produced by reacting the polyols with toluene diisocyanate. The resins were coated on mild steel panels and cured. Performances of the cured films were tested. Findings The polyurethanes (PU) resin cured to a harder film with better thermal stability. Films showed excellent adhesion properties, while higher content of PET exhibited higher pencil hardness, better water, salt, acid and alkali resistance. Research limitations/implications Other vegetable oils could also be used. The alkyd structure could be changed by formulation to have different functionality and the ability to incorporate higher amount of PET waste. Rate of glycolysis of PET could be increased by higher amount of ethylene glycol. Practical implications This method has managed to use waste PET in producing new polyol and PU resins. The cured films exhibit good mechanical and chemical properties, as well as excellent adhesion and thermal stability. Social implications The non-biodegradable PET has created environmental pollution problems connected to littering and illegal landfilling. It has become necessary to pay greater attention to recycling PET bottles for obtaining valuable products. Originality/value This approach is different from the earlier reports, where PET was recycled to recover the raw materials.

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