Polylactic acid (PLA) is a kind of completely biodegradable polymer. The degradation products are carbon dioxide and water, which will not pollute the environment. Its raw material lactic acid is fermented from renewable natural materials such as corn. Therefore, one of the biggest advantages of developing PLA plastics is that it does not use non renewable resources such as fossil.
However, due to the slow crystallization rate of PLA, it is almost amorphous polymer after processing, and its obvious disadvantage is poor high temperature stability. When the temperature exceeds 60 ℃, the product will deform and lose its function. Therefore, improving the heat resistance of PLA products is an important way to broaden its application range.
At present, the main methods to improve the heat resistance of PLA are as follows:
1. Composite with fiber;
2. Increase the glass transition temperature;
3. Improve the crystallinity.
The heat resistance of PLA blends can be effectively improved by isothermal crystallization, but the isothermal crystallization time is too long, it takes about 1 hour, and the production efficiency is low. And compounding PLA with fiber will affect its degradation performance.
Talc powder has three functions in the modification of PLA:
1. The preparation method of talc powder filled polylactic acid composite has the advantages of beautiful appearance, good rigidity, short molding cycle, light weight and low price.
2. Strength improvement: Natural talc powder is melt blended, and the composite is completely biodegradable; it has excellent mechanical properties, in which the tensile strength can reach 50 ~ 70MPa.
3. Polylactic acid has better heat resistance because of its own crystallization and the promotion of crystallization by nucleating agent talc.
Source: Institute of biodegradable materials
OKCHEM PLA, PBAT and PBS Distribution Project
OKCHEM is the strategic partner of Anhui BBCA (expected to be the largest PLA producer in China) and Xinjiang Blue Ridge Tunhe (the largest PBAT producer in China) to look for buyers and partners globally. If you want to join us in this project, please contact us at firstname.lastname@example.org. You may also make the application online at: https://www.okchem.com/agent/detail/degradableplastics/oem
1. About our distribution project and our partners
OKCHEM Chemicals Distribution Product List and FAQ
PLA, PBAT and PBS included in OKCHEM Distribution Project
FAQs for biodegradable plastic materials
Xinjiang Blue Ridge Tunhe is leading globally in the production of degradable materials
Anhui BBCA Kicked off the 2nd Phase Production for its 300 kt/a PLA Project
2. About product background introductions
What Does Biodegradable Mean?
Bioplastics, Biodegradation and Bio-based plastics
Comparison of biodegradable materials PLA, PBAT, PHA and PBS
Is PLA biodegradable unconditionally?
Biodegradable plastics — Polylactic acid (PLA)
What’s the Difference: Biodegradable and Compostable?
Harmonised standards for bioplastics products in EU
Certificates: reliable proof of biodegradability by independent institutes
PLA or PBAT, which will be more popular in the future market?
3. About market analysis and new development
PBAT raw materials: BDO under insufficient capacity and price increase by 50%; PTA and AA with overcapacity
Anhui Ruihong New Material Kicked off the construction of project with 25 kt/a of PVA, PLA, PBAT and PBS
China’s Kanghui Petrochemical kicked off its production of 33 kt/a PBAT/PBS on December 25
China's Hengli Petrochemical Officially Signed Production Project of 600 kt/a PBS on Jan 19, 2021
China’s Hengli Petrochemical adds another 300kt/a PBS on Feb 1, 2021, expecting a total capacity of 933kt/a PBS
New development in PLA: Durable new PLA cup can hold boiling liquids around 140 °F (60 °C)
ECP recently introduced as promising biobased compatibilizing agent for PLA/PBAT blends
Brief Highlights of PBAT and Its production in China
The state of the bioplastics market updated by European Bioplastics (EUBP)
Biodegradable product tradeshows: 2021 China International Biodegradation & Plastic Products Exhibition
Analysis of Chinese export on PBAT and PBS from 201901 to 202011
Production capacity of PLA in China expected to reach 3.3 million tons in the coming 5 years