Overview
Lactide is a cyclic diester derived from lactic acid, primarily used as a monomer for synthesizing polylactic acid (PLA), a biodegradable polymer. It is categorized into L-lactide, D-lactide, and meso-lactide based on stereochemistry. Its biodegradability and biocompatibility make it valuable in medical and packaging industries. Lactide is synthesized through the condensation of lactic acid molecules, followed by cyclization. The process involves careful control of temperature and catalysts to achieve high purity. The demand for lactide has grown significantly due to the increasing adoption of eco-friendly materials.
Physical and Chemical Properties
Lactide appears as a white crystalline solid with a molecular weight of 144.13 g/mol. It has a melting point of 95-97 °C and a boiling point of 142 °C at reduced pressure. The compound is soluble in organic solvents like chloroform and acetone but has limited solubility in water. Its cyclic structure and ester linkages contribute to its reactivity, making it suitable for ring-opening polymerization. Lactide is stable under dry conditions but may hydrolyze in the presence of moisture, requiring careful storage.
Main Applications
Lactide's primary application is in the production of polylactic acid (PLA), a biodegradable plastic used in packaging, textiles, and disposable utensils. PLA's biocompatibility also makes it ideal for medical applications such as sutures, implants, and controlled drug delivery systems. In addition to PLA, lactide is used in adhesives, coatings, and 3D printing resins. Its versatility and eco-friendly properties align with global sustainability trends, driving demand in green manufacturing sectors.
Safety and Storage
Lactide should be handled with care to avoid inhalation or skin contact, as it may cause irritation. Personal protective equipment (PPE), including gloves and goggles, is recommended during handling. Proper ventilation is essential in workspaces. Storage conditions should be cool, dry, and away from moisture to prevent hydrolysis. Sealed containers with desiccants are ideal. Shelf life can be extended by storing under inert gas, such as nitrogen, to minimize degradation.
B2B Procurement Guide
When procuring lactide, prioritize suppliers with certifications for purity and consistency, especially for medical or food-contact applications. Key specifications include enantiomeric purity (L-, D-, or meso-lactide) and residual monomer content. Bulk purchases typically offer cost advantages, but ensure storage capacity aligns with usage rates to avoid degradation. Request technical data sheets (TDS) and material safety data sheets (MSDS) to verify compliance with industry standards.
Related Manufacturers
- 主营：化工中间体、生物缓冲剂、实验试剂助剂
- 主营：5-二甲基吡唑、N-油酰基肌氨酸、环己基苯、外消旋丙交酯、β-溴苯乙烷、乙基纤维素、硫酸烟酰苯胺、2-辛烯基琥珀酸酐、菜籽油甲酯、5二硝基水杨酸、辛酸镁、辛酸钾、有机硅季铵盐、萘钠处理液
- 主营：聚乳酸、pga颗粒、改性剂、左旋乳酸、热塑板、丝、绳、乙交酯、高分子、共聚物、康复板、压裂球、生物材料、聚乙醇酸、塑料制品、微球原料、分散助剂、科技pga绳、聚己内酯、可吸收线、记忆材料、塑料颗粒、工业增塑剂、聚合物微球、甲基碳酸脂、二氧环己酮
- 主营：PET粉、液体顺丁橡胶、羧基丁腈橡胶、外消旋丙交酯、TPU粉、塑胶原料、EAA粉、环保降解塑料、特殊工程塑料、各种塑胶粉料、各种液体橡胶
- 主营：甘氨酸、阻燃剂、硫酸锰、丙交酯、十八酸、3188-00-9、碳酸镧、磷酸铁、丙酸铵、特戊醛、赖氨酸、增塑剂、咖啡酸、葡糖苷、蛋白粉、氨酰胺、酸性红、羟乙基、脂肪酶、7327-87-9、甲酸钙、58#石蜡、防腐剂、防水剂、聚丙烯、度米芬
- 主营：磷脂聚乙二醇、胆固醇聚乙二醇、PLGA、混旋丙交酯、功能化聚乙二醇、硬脂酸聚乙二醇、透明质酸、聚乙内酯、聚乳酸、葡聚糖、DOPE
- 主营：6-二羟基吲哚、二羟基吲哚啉氢溴酸、水解角蛋白、L-丙交酯、D(+)-丙交酯、7-去氢胆固醇、石胆酸钠盐、熊去氧胆酸钠盐、2-辛基十二醇、2-巯基噻唑啉、2-巯基苯并咪唑、苯基周位酸(8-苯胺、半叶素、乙烯利、环丙磺酰胺、苄氧基胺盐酸盐、1-氨基环丙烷羧酸、4-联苯甲醇丙烯酸酯、4-羟乙烯基氧基二苯、咪鲜胺、可比落、乙交酯
- 主营：电气用具、电线电缆、模压塑料、旋聚乳酸、管道系统、热熔胶粉、衬里管件、耐热阻燃剂、挤出成型品、模压挤出成型、阻燃高纯度铁氟
- 主营：硫化铵、二氧化硫脲、全氟庚烷
- 主营：磺酰胺、氧化铌、除醛剂、左旋乳酸)、硅化镱、基硅油、成核剂、酞菁钴、甘氨酸铬、光学树脂、鼠李糖脂、甲磺酸铋、氧化亚铁、封端硅油、六水氯化钇、己基磺酸盐、恩诺沙星钠、二聚季戊四醇、聚醚硫酸酯钠、恶唑啉交联剂、洗手凝胶增稠剂、生物活性玻璃粉、氰基丙烯酸乙酯、脱硫脱氢催化剂
- 主营：阻燃剂、乙酸镉、胶黏剂、同位素、二苯胍、指示剂、羊脂酸、磷酸铁、碳酸镍、磷酸铝、新癸酸、镉电池、化合物、氯铂酸、浮选剂、稀释剂、扁油酸、乙硫氮、氧化铝、乙酸锶、纺织品、防腐剂、枯名醛、润滑油、成核剂
- 主营：捕收剂、活化剂、浮选剂、捕选剂、乙硫氮、萃取剂、丁铵黑药、乙基黄药、选取金属、金属矿石、苯氧肟酸、苯胺黑药、噻唑硫醇、甲苯胂酸、乙二胺磷酸盐、苯甲羟肟酸、水杨羟肟酸
- 主营：氮丙啶交联剂、异山梨醇二甲醚、异山梨醇、丙交酯、有机硅