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Preparation method and application of linear poly(2-hydroxyethyl methacrylate) with different viscosity

A hydroxyethyl methacrylate and linear technology, which is applied in the field of synthesis of organic polymer compounds and polymer hydrogels, can solve problems that have not yet been patented or reported in literature, and achieve obvious temperature sensitivity, preparation methods and conditions Simple and easy to use, wide range of effects

Inactive Publication Date: 2018-03-30
JIANGSU UNIV
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  • Description
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Problems solved by technology

Through patent search and literature review, there are reports on the preparation method of linear PHEMA at home and abroad, but there are no patents or literature reports on the preparation method of linear PHEMA with different viscosities.

Method used

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  • Preparation method and application of linear poly(2-hydroxyethyl methacrylate) with different viscosity
  • Preparation method and application of linear poly(2-hydroxyethyl methacrylate) with different viscosity
  • Preparation method and application of linear poly(2-hydroxyethyl methacrylate) with different viscosity

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Embodiment 1-14

[0034] (1) Preparation method of different viscosity linear PHEMA

[0035] Add HEMA monomer and recrystallized AIBN into a 50ml three-neck flask containing a certain amount of DMSO, bubble nitrogen for 5min, then place the flask in an oil bath preheated to a certain temperature to heat, add a condenser tube above the flask, and pass cold water Cooling and condensation, nitrogen protection during the reaction, magnetic stirring, reaction for a certain period of time, stop. After the reaction liquid was cooled, it was extracted three times with 50 ml of ether, and the lower liquid was vacuum-dried at 40°C for 4-5 hours to obtain a colorless, transparent, viscous linear PHEMA liquid. The diethyl ether of the extract can be reused after recovery and distillation. The amount of specific monomers, solvents, process conditions and the viscosity of the corresponding products are shown in Table 1.

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Abstract

The invention discloses a preparation method and application of linear poly(2-hydroxyethyl methacrylate) with different viscosity, and belongs to the technical field of synthesis of organic high molecular compounds and high molecular hydrogel. 2-hydroxyethyl methacrylate is adopted as a monomer, azobisisobutyronitrile is adopted as an initiator, dimethyl sulfoxide (DMSO) is adopted as a solvent, and the linear PHEMA with different viscosity is prepared under different reaction conditions. (2) N-isopropyl acrylamide is adopted as a monomer, PHEMA of 692 cp is adopted as a second network, polyethylene glycol 1500 is adopted as a porogenic agent, and poly(N-isopropyl acrylamide)-poly(2-hydroxyethyl methacrylate) porous semi-interpenetrating composite hydrogel is prepared by adopting a solution polymerization method. The hydogel has the advantages of obvious temperature sensitivity, a through hole structure and rapid swelling and deswelling abilities, the content of the linear PHEMA in thehydrogel network has a wide adjustable range, and the hydrogel is expected to become a carrier material with excellent performance.

Description

technical field [0001] The invention belongs to the technical field of synthesis of organic polymer compounds and polymer hydrogels, in particular, it relates to a preparation method of linear poly-2-hydroxyethyl methacrylate (PHEMA) with different viscosities and a poly-N-isocyanate A preparation method of propylacrylamide-poly 2-hydroxyethyl methacrylate (PNIPAM-PHEMA) porous semi-interpenetrating composite hydrogel. Background technique [0002] PHEMA materials and resins are widely used in people's production and life. According to the internal structure of the polymer, it can be divided into cross-linked type and linear type. Cross-linked PHEMA has a three-dimensional network structure. Due to its good hydrophilicity, light transmission, plasticity and biocompatibility, it is used as the base material of contact lenses and has been industrially produced. The prepared contact lenses have been sold in China. listed. As the optical center material of artificial cornea, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F120/20C08F220/54C08F222/38C08J9/26C08J3/075C08L33/24C08L33/14
CPCC08F120/20C08F220/54C08J3/075C08J9/26C08J2201/0422C08J2333/24C08J2433/14C08F222/385
Inventor 李丽霞杨毅陈园园王明贤
Owner JIANGSU UNIV
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