Bicontinuous biomacromolecule ternary nanometer composite material and preparation method thereof

Abstract

The invention discloses a bicontinuous biomacromolecule ternary nanometer composite material and a preparation method thereof. The material comprises the following components by the mass portions: 60 to 70 portions of polycaprolactone, 30 to 40 portions of polylactic acid and 1 to 6 portions of organic montmorillonite modified by methyl bis(2-hydroxyethyl) dehydrogenate tallow ammonium chloride, which are added to an internal mixer; and the preparation method comprises the following steps: melting and co-mixing the three components for 8 to 10 min at the temperature of 150 to 190 DEG C and at the rotor speed of 40 to 60 rpm, and then obtaining the bicontinuous biomacromolecule ternary nanometer composite material. The invention prepares the bicontinuous biomacromolecule ternary nanometer composite material with a bicontinuous phase structure by utilizing the simple, easy and low-cost method, has the advantages of good thermo-plasticity, biocompatibility, biodegradability and organization absorbability, satisfies the requirements of environment development, and has potential application value in both the plastic universal field and the biomedical engineering field.

Description

technical field [0001] The invention relates to a biodegradable polymer ternary nanocomposite material, in particular to a polycaprolactone / polylactic acid / methylbis(2-hydroxyethyl)hydrogenated tallow ammonium chloride with a double continuous phase structure A modified organic montmorillonite polymer alloy-based nanocomposite material and a preparation method thereof. Background technique [0002] With the requirements of environmental development, biodegradable polymers such as polycaprolactone (PCL) and polylactic acid (PLA) have attracted increasing attention as a new type of polymer materials. They have good thermoplasticity, biocompatibility, biodegradability and tissue absorbability, so not only in the general field, but also in biomedical engineering such as drug controlled release substrates, porous tissue engineering scaffolds, packaging, etc. potential application value. [0003] However, a single polycaprolactone or polylactic acid has its own shortcomings in p...

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Problems solved by technology

[0004] However, the thermodynamic incompatibility between polycaprolactone and polylactic acid makes the blend materials have larger phase domains and loose interfacial bonds, which cannot reflect the superior performance of each component, so the system must be compatibilized to refine domain

The traditional method is to use a block copolymer with a similar chemical structure to polycaprolactone or polylactic acid as the third component for compatibilization, but the price of the block copolymer is too expensive, which greatly increases the stability of the blend material. manufacturing cost

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