Manufacturing and preparing pure lactarofoam, or polylactide foam, without oxygen, hydrogen, air, or additives such as isocyanates.

Abstract

Pure lactyrofoam without additives is very similar to Styrofoam, the same as Unolite, with more valuable properties. It is a light, porous, and usually white material that is used in packaging and insulation. It is sometimes called white fiber. Styrofoam is a type of white polymer that is produced from the synthesis of polystyrene in petrochemical processes, but lactofoam is made for the first time in the world from polylactic acid or polylactic acid or polylactide (PLA), obtained from renewable sources such as corn starch in the United States and Canada, cassava chips or starch roots (mainly in Asia) or sugarcane in the rest of the world, and is actually made from a type of biodegradable masterbatch. In 2010, polylactides accounted for the largest volume of consumption in the world compared to other types of bioplastics. Considering the volume of consumption and the extraordinary benefits of PLA as a bioplastic, it prompted us to choose a valuable replacement from the polyester category instead of polystyrene, and we can even use polylactide waste in the process of making lactyrofoam for use in the construction of cold storage facilities, fishing companies (called iceboxes) for transporting fishing products such as fish and shrimp, sound recording studios and sound insulation in spaces with high noise pollution, as well as making models, temporary advertising boards, and decorations. Lactyrofoam is used in the construction industry in various standard sizes as ceiling blocks, thereby reducing the large volume of styrene production, a relatively toxic chemical used to produce polystyrene.\nConclusion\nLactyrofoam was manufactured as a pure polylactide without air entrainment and without additives as the first bioplastic foam, and in its production process, environmentally friendly materials have been used to reduce chemical pollution, making it a widely used polymer.

Description

Description of the invention Title of the invention Manufacturing and preparing Lactyrofoam, or polylactide foam, without oxygen, hydrogen, air, or additives such as isocyanates, in its pure form. Technical background of the relevant invention Section (C) Chemistry and Chemical Engineering Technical problem and stating the objectives of the invention Lactyrofoam is very similar to Styrofoam, but with more valuable properties, it is a light, porous, and usually white material used in packaging and insulation. It is sometimes called white fiber. Styrofoam, like Unolite, is a white polymer made from the synthesis of polystyrene in petrochemical processes, but Lactyrofoam, made from polylactic acid or polylactic acid or polylactide (PLA), is obtained from renewable resources such as corn starch in the United States and Canada, cassava chips or starch (mainly in Asia), or sugarcane in the rest of the world, and is actually made from a type of biodegradable masterbatch. In 2010, polylactides accounted for the largest volume of consumption compared to other types of bioplastics in the world.Given the volume of consumption and the extraordinary benefits of PLA as a bioplastic, it prompted us to choose a valuable alternative from the polyester category instead of polystyrene, and even to be able to use polylactide waste in the process of making lactyrofoam for use in the construction of cold stores, fisheries companies (called ice chests) to transport fishery products such as fish and shrimp, sound recording studios and sound insulation in spaces with high noise pollution, as well as the manufacture of models, temporary advertising boards, and decorations. Lactyrofoam is used in the construction industry in various and standard sizes as ceiling blocks, thus reducing the large volume of styrene production as a relatively toxic chemical for the production of polystyrene. A description of the state of the prior art and the history of developments related to the claimed invention. Foam production methods 1-Styrofoam: Styrofoam, also known as styrene, is a white polymer made from the synthesis of polystyrene in petrochemical processes, which contains large amounts of styrene, a substance that irritates the respiratory system and eyes. If a person is exposed to a significant amount of styrene for a long time, systemic effects can occur. Polyurethane foam is a type of thermal insulation that has now become a widely used insulation in the construction industry. This chemical is made from a combination of two substances: isocyanate and polyol, both of which are liquids. When these two substances are combined, they form a foam due to a chemical reaction and turn into a solid after a few minutes. However, isocyanates are classified as toxic compounds and it is noteworthy that they cannot be recycled. Providing a solution to an existing technical problem along with an accurate, sufficient, and integrated description of the invention Due to the ideal properties of thermoplastic polymers such as corrosion resistance, low density or user-friendly design, plastic production has increased dramatically in the last 60 years, replacing aluminum and other metals. Styrofoam, better known as Styrofoam or Unolite, can keep your tea warm without burning your hands, but when it comes to the environment, it is one of the most harmful materials available. In recent years, the material has attracted a lot of negative attention, to the point where it has been banned in New York City and Washington, D.C. The word Styrofoam is actually the brand name for polystyrene foam, which is made by the Dow Chemical Company, and what almost everyone calls Styrofoam is not Styrofoam at all. Unolite is made from non-renewable crude oil. The process of producing polystyrene is listed as the fifth most hazardous source of waste, according to a 1986 report by the Environmental Protection Agency (EPA). 3 million Unolites are produced in the United States each year.680 pounds (443.680 kg) of greenhouse gases are released into the atmosphere by making 10,000 Unilite cups. Many cities, including Minnesota, New York City, Portland, Seattle, San Francisco, and several others, have banned Unilite in public facilities, in whole or in part. Washington, D.C. recently passed the DC Sustainable Materials Act of 2014, which includes a ban on the use of Unilite in restaurants and commercial spaces. If big cities like New York City and Washington, D.C. can do it, so can smaller places! More cities are joining the ranks of Unilite bans every day, driven by public demand. So this alarm bell has prompted us to take constructive action to replace Styrofoam by creating Lactyrofoam. Laboratory production process Manufacturing of high molecular weight polylactide Production process: First stage: Charging the polymerization reactor and producing polylactide First, add 144.26 g of lactide to a two-necked glass flask, then add 0.010 g of benzyl alcohol, then add 0.1 g of tin (II) octoate catalyst, and add 80 g of xylene to the mixture, and place it at reflux temperature under nitrogen gas for 12 hours to complete the polymerization process. After 12 hours, add the solution to the beaker and add 100 g of methanol to the mixture to obtain a white precipitate. The precipitate is dried in a vacuum oven and polylactide is obtained. It was analyzed for identification by FTIR and 1H NMR analyses. Figure 1-1 and Figure 1-2. The second stage of making polylactide foam, lactarofoam: In a 200 ml beaker connected to a mechanical stirrer, 100 ml of water is added and the temperature is raised to 100 °C. The polylactide produced is gradually added while the stirrer is running at 1300 rpm. After 10 minutes, 100 g of glass pearls are added to a sealed glass bottle and the solution is added to it. Shake for 20 minutes to obtain spherical micronized particles. The solution is added to the beaker while being stirred with a mechanical stirrer. 200 ml of methanol is added to it to form a suspension solution. Add it to an aluminum mold and dry it in an oven. Figure 1-3 Explanation of shapes, maps and diagrams Figure 1-1 shows the FTIR spectrum of the polymerization of polylactide, with the chemical composition characteristics marked in the spectrum. Figure 1-2 shows the 1H NMR spectrum of the polylactide synthesis, with peak labeling indicating complete synthesis of the compound. Figure 1-3 Synthesis of polylactide polymer. Figure 1-4 Particle size of manufactured polylactide powder Figure 1-5 Optical microscope image of fabricated foam particles Figure 1-6 shows the molecular weight of the foam made. Figure 1-7 shows the thermal analysis of the synthesized lactairofem. A clear and precise statement of the advantages of the claimed invention over prior inventions. What is important in this invention is that, given the available raw materials and very simple manufacturing technology, Lactyrofoam, or lactide foam with bioplastic capabilities, can be used as a replacement for polystyrene foam. Previous inventions used air purge or isocyanate, but this foam is completely pure. Description of at least one implementation method for implementing the invention For the production of sporting goods, toys, insulation, postal packaging, etc. Explicit mention of the industrial application of the invention For the production of lactofoam blocks, manufacturing various types of postal packaging foams, etc.

Claims

Claims What is claimed: Claim 1) Preparation and manufacture of a white solid polymer of polylactide acid, called lactarofoam, which consists of the following components: -Lactide for the polymerization reaction -Tin (II) octoate as a catalyst -Benzyl alcohol as a monomer for opening the lactide ring -Methanol as a solution for precipitating the desired polymer -Water as a dispersant of polymer particles -Xylene as a solvent for the polymerization reaction Claim 2) According to claim 1, lactide is used as the main component of the polymerization reaction, the ring opening reaction takes place on the lactide ring, and the polymerization takes place by opening the lactide ring. Claim 3) According to claim 2, the lactide ring opening process is designed in such a way that the reaction is carried out through the reaction of benzyl alcohol as a monomer in the presence of a tin(II) octoate catalyst. Claim 4) According to claim 3, the lactide ring opening is carried out in xylene solvent at reflux temperature and under nitrogen gas for 12 hours. Claim 5) According to claim 1, precipitation is carried out using a methanol solution under continuous stirring, and powdered polylactide is obtained after drying. Claim 6) According to claim 5, after making powdered polylactide, the polylactide powder is dissolved in a solvent of water and methanol, and the suspension solution is made at a stirring speed of 1300 rpm. Claim 7) According to claim 6, the suspension solution is subjected to micronization using glass beads, and spherical micronized particles are obtained. Claim 8) According to claim 7, after the micronization process, spherical micronized particles are added to the mold, dried in an interconnected mold and under a vacuum oven, and a white solid (lactarofoam) is formed by the removal of the solvent. Claim 9) According to claim 8, polylactide foam is made in pure form without air purge or addition of other compounds such as isocyanates.

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