Clear Seasoning PLA Cup raw material PLA, details are coming

  • Affected by the global "plastic restriction" and "plastic ban" laws, large-scale plastic restrictions have begun in some parts of the world and the domestic plastic ban policy has been gradually implemented. The demand for fully degradable plastics continues to grow. The outstanding advantages of materials have become a popular and commonly used degradable plastic bag. Can PLA, the raw material of Clear Seasoning PLA Cup, alleviate the environmental pressure caused by "white pollution"?

    The key is that the whole people can use it, and promote it and the product quality is high and stable. Since it has not yet become popular, everyone must not know much about it. Today, Jiushihao Packaging (Suzhou) Co., Ltd., a professional packaging manufacturer, will explain the "popular" material Clear Seasoning PLA Cup raw material.

    1. Clear Seasoning PLA Cup raw material PLA——What kind of material is the Clear Seasoning PLA Cup raw material PLA?

    Polylactic acid is an aliphatic hydroxy acid polymer, which is a hard material in a glass state at room temperature and is converted into carbon dioxide, CH4, and water under the decomposition of microorganisms. It is a typical linear fully biodegradable material.

    Clear Seasoning PLA Cup Raw Material PLA Molecular Formula

    Clear Seasoning PLA Cup raw material PLA can be processed by injection, blow molding, compression molding, thermoforming, and extrusion molding. The monomer lactic acid of Clear Seasoning PLA Cup raw material PLA is a chiral molecule, and there are two optical enantiomers, L-lactic acid, and D-lactic acid. The raw material PLA of Clear Seasoning PLA Cup has three configurations. PDLLA and PLLA are two common polymers. The crystallinity of PLLA is related to the L monomer content, and the crystallization rate and crystallinity depend on the nucleating agent, time, and temperature. The physical properties of the raw material PLA of Clear Seasoning PLA Cup are related to the enantiomeric purity of the lactic acid stereocopolymer, and the homopolymerized PLLA and PDLA have high regularity and crystallinity.

    2. Synthesis of PLA, the raw material of Clear Seasoning PLA Cup - polylactic acid (PLA, the raw material of Clear Seasoning PLA Cup)

    Lactic acid is the initial raw material for the synthesis of polylactic acid. At present, lactic acid manufacturers in my country basically use microbial fermentation of starch-rich food crops to produce lactic acid.

    2.1 Direct method

    At a temperature of 140-210 °C, in the presence of a dehydrating agent, the lactic acid molecules are heated and dehydrated, and polycondensed to form oligomers, and then continue to heat up. The low molecular weight Clear Seasoning PLA Cup raw material PLA is chain-extended into higher molecular weight polylactic acid.

    2.2 Indirect method

    It is difficult to obtain high molecular weight polylactic acid by the direct polycondensation method. One of the reasons is that the viscosity of the system increases continuously during the polycondensation process so that the generated water cannot be removed. In order to obtain high molecular weight polylactic acid, the first step is to oligomerize lactic acid into low molecular weight Clear Seasoning PLA Cup raw material PLA, and the second step is to crack it into cyclic dimer lactide of lactic acid under high temperature and high vacuum. The lactide is separated and purified, and the polymer polylactic acid is obtained by ring-opening polymerization in the presence of an initiator.

    3. Modification of PLA, the raw material of Clear Seasoning PLA Cup—polylactic acid (PLA, the raw material of Clear Seasoning PLA Cup)

    3.1 Physical modification

    Nucleating agent: The addition of a nucleating agent can improve the problem of imperfect crystallinity of Clear Seasoning PLA Cup raw material PLA, and improve the crystallinity, which can improve the heat resistance and physical properties of Clear Seasoning PLA Cup raw material PLA.

    Plasticizer: Adding plasticizers like glycerin, sorbitol, oligomer PEG, etc. can improve the processing and mechanical properties of the Clear Seasoning PLA Cup raw material PLA, and improve the toughness and impact resistance of the Clear Seasoning PLA Cup raw material PLA.

    Inorganic fillers: Commonly used PLA inorganic fillers for Clear Seasoning PLA Cup raw materials include kaolin, montmorillonite, calcium carbonate and hydroxyapatite, etc. The addition of fillers can improve the impact strength and thermal decomposition temperature of Clear Seasoning PLA Cup raw material PLA, and Can play a role in reducing costs.

    Blending with other biodegradable plastics: After blending Clear Seasoning PLA Cup raw material PLA with PCL, PBAT, PBS, and other degradable materials, the melting point and crystallinity of Clear Seasoning PLA Cup raw material PLA can be changed to improve mechanical properties the goal of.

    3. Chemical modification

    Chemical modification is to combine the active monomers or groups of certain compounds with the PLA molecules of the Clear Seasoning PLA Cup raw material in the form of covalent bonds. Compared with physical modification, chemical modification has stronger binding force, mainly including: Copolymerization modification, graft modification, chain extension modification, and crosslinking modification.

    4. Performance comparison between PLA, the raw material of Clear Seasoning PLA Cup, polylactic acid (PLA, the raw material of Clear Seasoning PLA Cup), and the main degradable plastics

    Polylactic acid (PLA, the raw material of Clear Seasoning PLA Cup) is a new type of biodegradable material, suitable for various processing methods such as extrusion, injection molding, film drawing, spinning, etc. It is easy to process, so it can be used in food packaging, clothing packaging, clothing packaging, fast food lunch boxes, non-woven fabrics, industrial and civilian fabrics, agricultural fabrics, 3D printing, and other fields.

    Jiushihao Packaging (Suzhou) Co., Ltd., a professional packaging manufacturer, found that the development and application of polylactic acid (PLA, the raw material of Clear Seasoning PLA Cup) is particularly rapid. According to statistics, from 2015 to 2020, the annual growth rate of the global polylactic acid market will reach 20.9%, and by 2020 the global polylactic acid consumption market will reach 5.16 billion US dollars.

    Driven by environmental protection policies, biodegradable plastics such as PLA, PBAT, PHA, PCL, and PBS, which are the raw materials of Clear Seasoning PLA Cup, are ushering in a new market for their applications in disposable tableware, packaging, agriculture, automobiles, medical care, and textiles. opportunity. Jiushihao Packaging (Suzhou) Co., Ltd.'s Clear Seasoning PLA Cup has undergone multiple inspections and has a variety of industry qualification certifications, which can efficiently meet mass production. At the same time, Jiushihao Packaging (Suzhou) Co., Ltd. recycles recyclable packaging. , There are also remarkable achievements in the field of degradable packaging. If you need to buy Clear Seasoning PLA Cup, you can contact us:86-13915532754