PET waste bottles

New Liquid Crystalline Poly(azomethine esters) Derived from PET Waste Bottles... 

In this chapter, the new thermotropic liquid crystal poly(azomethine esters) were designed and synthesized as T-shaped azomethine bisphenols containing azomethine linkage (-CH=N) attached to different halogens and were reacted with terephthaloyl chloride that has been obtained from the regenerated terephthalic acid of PET waste bottles. The effect of the azomethine linkages and the type of the substituents (halogens) on the liquid crystalline behavior, thermal stability, as well as the crystalline states of these polymers were further studied and analyzed. 

In the present work, terephthalic acid was successfully regenerated from PET waste bottles via saponification process in high yield and purity. The new liquid crystalline poly(azomethine esters) based on terephthalic acid were prepared and characterized successfully using important and vital spectroscopic methods. The combining results that obtained from DSC, POM and XRD studies were confirmed the liquid crystallinity of the poly(azomethine esters). AU the polymers exhibit nematic mesophases except that for polymer 3(a). Furthermore, TGA results also confirmed that the new synthesized polymers possess high thermal stability. 

Issam AM (2014) A new approach to obtain Kevlar-49 from PET waste bottles. Res Chem Intermediat 40 3033-3044... 

On the state level, the interplay of plastics and legislation began in 1978 with the introduction of the polyethylene terephthalate (PET) beverage bottle. In a relatively short time, nine states introduced Tx)ttle bills," or deposit laws on the return of plastic bottles. In these states, the deposit laws account for collection of an estimated 80 to 95% of the PET bottles sold. At present, at least 30 states are looking into some sort of waste management legislation involving plastics. 

Sustaining value chains is about finding ways to make the value chains in which Shell chemicals companies participate more sustainable. Examples include the development of cool wash detergents, and the PETFix technology to recycle waste PET drinks bottles into building materials. 

The high cost of resins used in the production of polymer concrete (PC) makes the material expensive relative to cement-based materials. Not surprisingly, a recent survey ranked lower cost resins as the most important future need for PC [1], Recently, some work has been done on the production of unsaturated polyester resins based on recycled poly (ethylene terephthalate), PET [2], The PET wastes are typically found in used beverage bottles, and many states have passed legislation to collect and recycle these bottles. If specially formulated, the unsaturated polyester could be used in the production of PC [3],... 

The reaction of polyethylene terephthalate) (PET) with diethanolamine, followed by propoxylation, gives liquid amidic polyols useful in rigid PU foam fabrication. This method is an efficient variant of PET waste chemical recovery (bottles, x-ray films, fibres and so on) [1]. 

This method, also called recycling by re-extrusion or melt recovery, is used for relatively pure PET waste such as cleaned consumer bottles or in-house waste. The method is based on the same principles as the original equilibrium polycondensation reaction ... 

Isotropic PHB foils possess excellent barrier properties against gas permeation. This is the rationale for potential applications in packaging, especially for food. The substitution of polyethylene terephthalate (PET) for bottle production seems to be especially attractive, considering the volume of PET waste. Another option consists in the modification of paper since paper/poly(HB-c<7-HV) foils are completely biodegradable, unlike paper coated with conventional foils [212]. The simplest apphcation is in containers, plastic bags and foils, commonly produced... 

Designing products, especially plastic bottles, for easy recyclability is a key sustainable development goal. For instance, avoiding any PVC components in the bottle (such as labels or caps) is helpful as it simplifies cleaning especially in PET waste... 

PET beverage bottles are the largest single source of PET in municipal solid waste, and packaging accounts for more PET in MSW than either durable or nondurable goods, as shown in Fig. 12.9. 

Bottles made of PET are recycled to reuse the material out of which they are made and to reduce the amount of waste going to landfills. The empty PET packaging is discarded by the consumer after use and becomes PET waste. In the recycling industry, this is referred to as post-consmner PET . Many local governments and waste collection agencies have started to collect post-... 

Input raw material - used PET bottles Cleaning of PET waste 4 Cutting of waste Into small uniform L J 4 Densifying low density raw waste ... 

First developed in a lab in the 1940s, polyester is one of the world s most widely used fibres. But unfortunately, polyester is made from anon-renewable resources. That s why we ve been using recycled polyester for some years now. They main source of recycled polyester is PET plastic bottles and waste raw material left over from production. Independent third party certifieation follows the Global Recycling Standard (GRS). 

E.7.5 Calculate an LCA for an aluminum reusable water bottle and compare the results to the LCA for PLA and PET water bottles. How many times would you have to reuse an aluminum water bottle to equal the GHG emission and waste generation of PET plastic water bottles. 

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