For questions relating to the structures, properties, production methods and potential hazards of polymer materials commonly known as plastics

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What is Bisphenol A used for?

I am trying to find out what BPA is used for in the industrial production of plastics. On sources such as Wikipedia I only found the information that it is used, but not why. What are the advantages ...
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2answers
101 views

Are all PP(Polypropylene), i.e. resin code 5 plastics, safe for microwave and steaming?

If a plastic is marked PP as in Polypropylene (i.e. resin code 5) http://en.wikipedia.org/wiki/Resin_identification_code Is it automatically safe for steaming and microwaving, such that it ...
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0answers
23 views

Can TBE electrophoresis buffer be stored in a PETE container?

I'm doing a science project on agarose gel electrophoresis and would like to know if it is safe to store Tris/Borate/EDTA buffer solution inside a PETE container since I will be making about 10L of ...
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1answer
57 views

Decomposition products of PET

On Wikipedia, it says that polyethylene terephthalate (PET) decomposes at temperatures above 350°C. What are these decomposition products? I read further that acetaldehyde is produced, but is that ...
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1answer
48 views

Plastics for food packaging

There are many types of plastics that can be used for food packaging, for example: Polyethylene terephthalate (PET) Polyethylene (PE) Polyvinyl chloride (PVC) Polypropylene (PP) What are the ...
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What are Thermoplastic Elastomers (TPE) and what is their environmental impact [closed]

TPE is often touted as a more environmental alternative to PVC (at least for yoga mats). What are TPEs and what raw materials are they manufactured from. What uses and properties do they have? Are ...
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92 views

Biopolymers as alternative for PVC and PU?

I'm working on a project making a product line more sustainable, environmentally friendly and ready for recycling. Now I'm searching for good and suitable biopolymers for a part of the product that ...
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1answer
219 views

What is Polymer Environmental Resin (PER)?

I'm no chemist and I probably wouldn't understand any technical answer but... I'm investigating the environmental impacts of various materials as compared to PVC and this is one that crops up ...
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1answer
97 views

How metal-plating on plastics is performed?

Metal coated plastics are commercially abundant now-a-days. I want to know how they're plated. Before posting, I did a quick search and found a nice link. It refers to this process as metallization, ...
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1answer
52 views

Thermoplatics into Thermosetting plastics

I must confess, I am not a chemistry student but have always been a fan of it, so I am not sure if this is a blunder. I have often wondered if Thermoplastics can ever be converted to or made to ...
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1answer
39 views

Suitability of liquid plastic resin for plumbing application

Which synthetic resins are suitable for fabrication of plumbing components e.g pipe sections? I'm trying to find an easy way to mold/house/encase a custom designed data logger. The water temperature ...
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29 views

Making bioplastics

I've heard a lot about creating bioplastics out of corn and starches, but I'm confused on how companies like Cereplast can do it with algae. Basically, I was wondering how you start with algae and end ...
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1answer
98 views

Does variations in air pressure affect the melting point of PLA and ABS while 3D Printing?

Tight temperature controls are needed to ensure that the filament used in fabrication does not begin to "ooze". In places where the air pressure rises and drops during the course of the day there may ...
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2answers
108 views

Polyethylene terephthalate reaction with tap water

I have searched the internet and I found that reusing PET no.1 is dangerous. Why it is dangerous and what is the equation of the reaction between it and water tap ? And why it is not danger to when it ...
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1answer
250 views

Chemically Speaking, What's Bad About Inhaling Plastics?

I hear about things like dioxin, but I really don't see what's dangerous about plastics-shouldn't you be ble to just breathe it out, or pass it out of your system? How would it cause cancer?
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40 views

Plastic: Reputable Publications

I would just like some reputable textbooks and or publication companies that have extensive research on plastics, as, for example, dealing with life cycles of plastics, degradation factors, effect on ...
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1answer
72 views

What barriers prevent plastic from becoming a fiber optic, data transmission medium?

This is a question that has bothered me for a while. In the past many years, no company has been able to develop a material that can transmit light nearly as well as fiber optic glass, or at least ...
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1answer
512 views

How would I select the strongest Plastic Material?

Plastic Selection I'm going to have an online machine shop build a part for me using a CAD drawing that I specify. Typically, these parts are made of Aluminum, but this manufacturer also mills parts ...
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1answer
95 views

Can flexible plastics have reflective coating (vacuum metalized)?

Is it possible to achieve an optical mirror coating to a flexible plastic part? If vacuum metalization is possible, would the reflective coating layer be durable enough to withstand the bending of a ...
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38 views

Which plastic can be partially broken by pressure easily?

I need to create a container which hold ~150 to 500 ml water. My plan is to create something like a inverse cone. I will apply pressure (~20psi) on the top of the cone and I want to create a hole at ...
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1answer
75 views

What are the common names of this two types of plastic?

I need to do some plastic molding design. I want to know the names/types of plastic which are commonly/widely used in industries (please see the pictures below).
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1answer
1k views

A thermoset or a thermoplastic?

How do you know if a polymer is a thermoset or a thermoplastic? For example: hydroxybutanoic acid 2-amino-3- hydroxybutanoic acid (I am not sure if these are correct in English) I know what ...
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1answer
715 views

What's that tangy smell on cheap plastic?

Most cheap items (from china mostly) have a strong tangy odor to the plastics (or some resin, but i can mostly smell it on plastics). The smell is always consistent over a broad range or products and ...
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145 views

Clear HDPE Class 6 molding plastic?

I am creating Class 6 HDPE cutting boards, with some added features to it, so that they are not only definable as my creations, but in doing so I will carve some things into the back or front of the ...
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772 views

Pipetting strong acid with plastic material

Can I pipette concentrated sulfuric acid using a plastic pipette tip? Will either the plastic or the acid be affected?
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125 views

How is silica bead bonded into polystyrene?

What kind of bonds silica bead forms with polystyrene? Silica is now as ~100 $\mu$m spherical particles in bulk polystyrene that is made by melting. How can I bond the silica particles more ...