Talk:Polymerization

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Methods of polymerization

A description of the different methods of polymerization is required. These include the bulk, emulsion, suspension, solution, precipitation and dispersion polymerization methods. Some on these topics alread have article/stubs, and should be linked to. Msmi121 01:44, 10 July 2007 (UTC)[reply]

Celluloid

Ok, I'm going to be writing a new article on celluloid, and just as an fyi, celluloid is NOT just nitrocellulose. Minimally, it's nitrocellulose (70-80 parts) plus camphor (30 parts or so), plus dyes (0-14 parts), plus ethyl alcohol (1-5 parts), plus all the other extras that get put into plastics. Dwmyers.

previous edit disputed

Last edit removed for the following reasons: Addition polymerization and step-growth polymerization do not refer to the way monomer feed is added to a polymerisation. interfacial and emulsion polymerisation do no represent a means of polymerisation (molecular mechanism) but reflect a set of reaction conditions. radical / cationic / anionic polymerisation belong to the class of addition polymerisation and not step growth. Consult the separate articles addition polymerization and step-growth polymerization . Also, living polymerization can only be archieved with very special reaction conditions. Coordinated polymerization belongs to addition polymerisation. It is always a good idea to include references in an article like ref 1. for this article any book on introduction to polymer chemistry will do.

I don't mind that my changes were reverted. If I add these ideas back in, I'll be sure to provide references. HappyCamper 17:58, 30 Apr 2005 (UTC)

Cleanup: Complete Rewrite Required

There was originally a huge chunk of text (apparently copied and pasted), and somewhat incoherent in nature. I have wikified and better organised the information, but it still does not sound like a proper encyclopedia article. This reason, coupled with the apparent fact that the article was copied and pasted, justifies a rewrite (or at least extensive rephrasing).

— 0612 (TALK); Posted: 11:17, 17 January 2007 (UTC)[reply]

The last decent version of the article is dated http://en.wikipedia.org/enwiki/w/index.php?title=Polymerization&oldid=61222731 The overview section for some reason completely dissapeard and I suggest to restore it. The DNA polymerization section simply does not belong here and should be removed V8rik 22:07, 18 January 2007 (UTC)[reply]

I never realised that there was such a nice, long overview! Thank you for pointing it out. I will restore that section. Thanks again.

— 0612 (TALK); Posted: 08:41, 19 January 2007 (UTC)[reply]

depolymerization?

How can polymerization be reversed? -lysdexia 00:52, 13 March 2007 (UTC)

Anything which provides energy to the structure to cause bonds to be broken; electromagnetic radiation, heat, etc.

♥♥ ΜÏΠЄSΓRΘΠ€ ♥♥ ^{slurp me!} 19:50, 11 May 2007 (UTC)[reply]

As a rule, polymers with quaternary carbons (such as PMMA) depolymerize when heated with good yields of the monomer. --Cubbi 18:39, 15 May 2007 (UTC)[reply]

I think you would use cracking. --Ah2190 12:34, 31 March 2007 (UTC)[reply]

syntactic gap in Introduction

In Introduction, the second sentence should be modified. "... alkenes, which are a relatively stable due to bonding ..." requires either deleting the indeinite article before "relatively" OR possibly a noun after "stable". I don't know which of the two possibilities would be more correct.---- —Preceding unsigned comment added by Svato (talk • contribs) 02:23, 12 December 2007 (UTC)[reply]

Polymerisation of alkanes?

I came to this article looking for information on whether it was possible to polymerise methane to form propane or butane (partly to answer a question at talk:butane). The article specifically refers to double bonds and alkenes and seems a little ambiguous about polymerising single bonds. Does this imply that it's not possible to polymerise alkanes, or has it just not been mentioned? --Athol Mullen (talk) 13:37, 11 July 2008 (UTC)[reply]

Polymerisation

Since the US is not the centre of the world, I propose that the spelling be changed to the more widely accepted Polymerisation (in conjunction with the UK, Australia, Canada and others).--Welcome to the dark side. (talk) 05:44, 6 September 2009 (UTC)[reply]

Depolymerization

Needs:

Explanation of why this occurs.
Generation of carcinogenic liquids and gases as a result, including relevance to:

- the disposal of vinyl siding
- the health impact of the reuse of plastic bottles by consumers
- the possible health impact of the interior atmosphere of cars
- the clouding of windshields of cars.

The chemical breakdown of plastics and other polymers due to time, light, and heat. For a solid polymer, can result in softer (shorter-length) polymers and/or in small molecules that form liquids, gases, or both.

Chain-growth polymerization

Does this edit refer to this sort of thing? Seems a bit obscure to me... but if we are going to mention it I think we need to be clearer.

The edit added the following phrase (in bold here to highlight the new bit):

Chain-growth polymerization (or addition polymerization) involves the linking together of molecules incorporating double or triple chemical bonds, however there are exceptions (i.e., poly(beta-amino esters) are formed from a diacrylate backbone and is step-growth).

Yaris678 (talk) 22:32, 15 April 2012 (UTC)[reply]