Asanka Posted June 2, 2013 Share Posted June 2, 2013 Dear all, Can you suggest how to make NBRubber to biodegradable Link to comment Share on other sites More sharing options...
Asanka Posted June 3, 2013 Author Share Posted June 3, 2013 any one knows a suggestion, pls reply. Link to comment Share on other sites More sharing options...
EdEarl Posted June 3, 2013 Share Posted June 3, 2013 Welcome to SFN. I am unable to answer your question. Apparently, no one else can either. Link to comment Share on other sites More sharing options...
John Cuthber Posted June 3, 2013 Share Posted June 3, 2013 Apparently, nobody here had chosen to answer it that quickly. IIRC one of the early methods for making plastics more degradable was to mix the polymer with starch. It wasn't great, but at least when the mircobes ate the starch the product fell apart. The word biodegradable isn't very well defined so the question is difficult to answer. Also, since NBR isn't biodegradable, if you converted it into something which did biodegrade, you wouldn't have NBR any more. Whether the material would still be usable is another matter. Link to comment Share on other sites More sharing options...
Enthalpy Posted June 3, 2013 Share Posted June 3, 2013 NBR is already a copolymer. What about adding one momomer more that would introduce sequences edible by bio-agents? Sorry if I put nonsense, I'm weak on chemistry. Link to comment Share on other sites More sharing options...
Asanka Posted June 20, 2013 Author Share Posted June 20, 2013 By adding PHA or PHB as a filller . can NRB biodegradable ? Link to comment Share on other sites More sharing options...
Ophiolite Posted June 20, 2013 Share Posted June 20, 2013 I'm not sure if that would work, but it wold certainly degrade the properties of the NBR. What application is the NBR to be used in? Link to comment Share on other sites More sharing options...
Enthalpy Posted June 20, 2013 Share Posted June 20, 2013 NBR is commonly used as a seal joint material, and provided someone wants it to biodegrade, a PHB filler doesn't look that promising: http://en.wikipedia.org/wiki/Polyhydroxybutyrate - High permeability - Poor resistance to acids and bases (but might match hydraulic oil) - I would not use a rigid filler in an elastomer! Why should a filler be better than a copolymer? Link to comment Share on other sites More sharing options...
John Cuthber Posted June 20, 2013 Share Posted June 20, 2013 Realistically, unless someone who has actually done this turns up and answers, the only way to find out is to try it. Link to comment Share on other sites More sharing options...
Ophiolite Posted June 21, 2013 Share Posted June 21, 2013 NBR is commonly used as a seal joint material, and provided someone wants it to biodegrade, a PHB filler doesn't look that promising: Yes, but it can be used in static, or dynamic seals. I have minor knowledge of the latter and access to experts on the matter. I suspect this will be a static application, in which case I can do little to help. Link to comment Share on other sites More sharing options...
Asanka Posted July 7, 2013 Author Share Posted July 7, 2013 Thank for all for sugesions.. this is to make disposable gloves to make biodegradable there is a enzyme name as ROX A .. can it be usable practically, because it must be biodegrade only after disposing to soil Link to comment Share on other sites More sharing options...
Enthalpy Posted August 26, 2013 Share Posted August 26, 2013 Some biodegradable polymers are polylactic acid (commonly available for 3D printers) and polycaprolactone: http://en.wikipedia.org/wiki/Polylactic_acid http://en.wikipedia.org/wiki/Polycaprolactone Polylactic acid makes items not resistent to heat, chemicals... nor to biodegradation, but you seem to like that. Would it be any suitable for gloves? Not as a protection against chemicals - this looks like a generic restriction for biodegradable gloves. In any case, you should consider to copolymerize the biodegradable part with NBR, instead of mixing it after polymerization. Link to comment Share on other sites More sharing options...
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