Bio-Polymers

Ellen Rita
Mind Map by Ellen Rita, updated more than 1 year ago
Ellen Rita
Created by Ellen Rita over 4 years ago
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Description

Uni Sustainable Manufacturing Mind Map on Bio-Polymers, created by Ellen Rita on 12/24/2015.

Resource summary

Bio-Polymers
1 A plastic material produced from biomass sources. Plastics can be produced from starch and cellulose, but also polylactic acid and biomass-derived ethylene, can achieve improved performance and/or durability.
1.1 Starch
1.1.1 Low cost
1.1.2 Use surplus agricultural produce
1.1.3 Compatible with thermal processing
1.1.4 Limited strength (blended with non-bio polymer)
1.2 Cellulose
1.2.1 Most abundant natural polymer
1.2.2 Not water soluble
1.2.3 Used in a wide range of applications: Paper, film, cellophane
2 Advantages
2.1 Biodegradable
2.2 Low environmental impact
2.3 Bio-compatable
2.4 Consumes less energy to produce
2.5 Renewable
2.6 Compatible with other ecosystems (ocean)
2.7 Less waste going to landfill
2.8 Use less C02 to extract
2.9 Feedstock- renewable
2.10 Energy recovery from ethanol used within production
3 Disadvantages
3.1 Biodegradable
3.2 Poor physical and technical problems
3.3 No recycling routes for bio-polymers
3.4 People are unsure of how to deal with the waste
3.5 Contaminating of plastic recycling systems
3.6 Rely on environmental factors
3.6.1 Technology is needed to stabilize production - greenhouses for when there is a wet period (stabilize prices)
3.7 Ethical drawback (food-fuel)
3.8 10x cost of conventional plastics
3.9 Greenhouse Gases other than CO2 released into the atmosphere during production and after use. Methane released in landfill
3.10 Difficult to separate from plastics waste
3.10.1 Lack of industrial composting infrastructure
3.11 Degredation of biopolymers may be more of a problem than the polymers themselves
3.12 Makes materials physically and chemically smaller but not disappear
3.13 Speed of degredation is important: too fast and the polymer is useless, too slow and the waste remains for long periods
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