Biodegradable polyester nanocomposite and preparation method thereof

A nanocomposite material and technology of biodegradable polyester are applied in the fields of polycaprolactone/hydroxyapatite nanocomposite material and its preparation, biodegradable polyester nanocomposite material and its preparation field. Polymer properties and other issues, to achieve the effect of improving mechanical properties, improving dispersion, and good compatibilization effect

Active Publication Date: 2014-07-23
JIANGNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the particularity of the size of the nanoparticles and the compatibility with the polymer matrix, the nanomaterials are prone to agglomeration and phase separation in the polymer, which reduces the performance of the polymer itself.

Method used

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  • Biodegradable polyester nanocomposite and preparation method thereof
  • Biodegradable polyester nanocomposite and preparation method thereof

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preparation example Construction

[0019] Preparation of compatibilizer:

[0020] 1. Weigh 24g of dehydrated and dried caprolactone (moisture content<0.05‰), add it to a three-necked flask, ventilate nitrogen, add 0.5g of macromolecular initiator polyethylene glycol-2000, and then add 0.025g of methanesulfonic acid as Catalyst, the reaction temperature is 140°C, the temperature is raised and stirred, and the reaction is carried out for 24 hours to obtain the compatibilizer PCEC-2K; the molar ratio of polyethylene glycol-2000 to caprolactone is 1:840.

[0021] 2. Weigh 22g of dehydrated and dried caprolactone (moisture content<0.05‰), add it to a three-necked flask, ventilate nitrogen, add 1.5g of macromolecular initiator polyethylene glycol-6000, and then add 0.023g of stannous octoate to make Catalyst, the reaction temperature is 140 ° C, the temperature is raised and stirred, and the reaction is carried out for 24 hours to obtain the compatibilizer PCEC-6K; the molar ratio of polyethylene glycol-6000 to capro...

Embodiment 1

[0025] After mixing 2000g of polycaprolactone (PCL), 20g of nano-hydroxyapatite and 2g of compatibilizer PCEC-2K, melt blending was carried out to obtain a biodegradable polyester nanocomposite. Made a standard sample, the properties of the composite material obtained through testing are shown in Table 1.

Embodiment 2

[0029] After mixing 2000g of polycaprolactone (PCL), 200g of nano-hydroxyapatite and 40g of compatibilizer PCEC-2K, melt blending was carried out to obtain a biodegradable polyester nanocomposite. Made a standard sample, the properties of the composite material obtained through testing are shown in Table 1.

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Abstract

The invention provides a biodegradable polyester nanocomposite and a preparation method thereof and in particular provides a compatibilizer modified polycaprolactone (PCL) / hydroxyapatite nanocomposite and a preparation method thereof. The compatibilizer can obviously improve dispersion of nano-hydroxyapatite in PCL, thus improving the mechanical properties of the nanocomposite. The compatibilizer has biocompatibility and biodegradability, thus being favorable for the nanocomposite to be applied in the biomedicine. The method for preparing the nanocomposite by adopting melt blending is simple and convenient to operate, is simple in production process and easily achieves large-scale production.

Description

technical field [0001] The invention relates to a biodegradable polyester nanocomposite material and a preparation method thereof, in particular to a compatibilizer-modified polycaprolactone / hydroxyapatite nanocomposite material and a preparation method thereof. The invention belongs to polymer materials technology field. Background technique [0002] Polycaprolactone (PCL) has attracted widespread attention due to its good mechanical properties, biodegradability and biocompatibility, and PCL has a wide range of sources, reasonable price and stable performance, making it a widely used aliphatic polyester. A sort of. There are many molding methods for PCL, including blow molding, injection molding, compression molding and thermoforming. The main products are films, which can also be used in food and medical packaging materials. However, the defects of PCL, such as low melting point, poor stability, and easy deformation under force, restrict its development. [0003] Polym...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08K3/32C08G63/08
Inventor 东为富严洋洋陈明清马丕明段芳施冬健
Owner JIANGNAN UNIV
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