Aliphatic polyester/calcium carbonate composite material and its preparation method

• Main Authors: SONG FEI, WANG XIULI, DANG HAICHUN, NIE WUCHENG, SHI WENTING, LIU GUICHENG, WANG YUZHONG, BAO WENYI
• Format: Patent
• Language: Chinese; English
• Published: 24.04.2013
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The invention discloses an aliphatic polyester/calcium carbonate composite material. The composite material is obtained through in-situ ring-opening polymerization of 0.3-10 parts of calcium carbonate and 100 parts of a lactone monomer, wherein calcium carbonate is/is not subjected to surface modification treatment, and the morphology of the calcium carbonate has a dandelion shape formed through the self-assembling of sheet-shaped, spherical, silkworm cocoon-shaped, rhombohedral, rod-shaped, hollow bamboo shoot-shaped, dead tree trunk-shaped, bunchy, cactus-shaped, petal-shaped, cockscomb-shaped or nanometer rods, or has a hemispheric shape self-assembled through nanometer rods. The invention also discloses a preparation method of the composite material. Calcium carbonate utilized in the invention has abundant morphologies, and has a large contact area with a matrix, so the organic and inorganic endophilicity in the composite material is increased, and simultaneously calcium carbonate can be uniformly dispers