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Transparent aliphatic polycarbonate composition and use thereof

A technology of polycarbonate and polyalkylene carbonate, which is applied in the field of transparent blending compositions of heterogeneous resins, can solve the problems of easy cracking, low elastic modulus, low heat resistance, etc., and achieve simple process, Effect of improving mechanical properties and excellent adhesion

Active Publication Date: 2015-01-28
SK INNOVATION CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, aliphatic polycarbonate has a low glass transition temperature (Tg) and is easily degraded at about 200°C, making aliphatic polycarbonate have lower heat resistance
In addition, the use of aliphatic polycarbonate has limitations in several fields since aliphatic polycarbonate has a low elastic modulus in terms of mechanical properties and may be easily cracked in the case of film products

Method used

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  • Transparent aliphatic polycarbonate composition and use thereof
  • Transparent aliphatic polycarbonate composition and use thereof
  • Transparent aliphatic polycarbonate composition and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 6 and comparative example 1 to 5

[0066] As the reagents used in the examples, polypropylene carbonate (PPC, Mw: 92,000, Tg: 32.6), poly(D,L-lactide-co-glycolide) (PLGA, Aldrich Com.) were used And polyvinyl acetate (PVAc, Mw: 100,000, Aldrich Com.). These materials were dissolved in acetone in the ratio shown in Table 1 below, solvent casting was performed, and then pressed by hot pressing to produce a film. In this case, in the PLGA of Examples 2 to 6, the weight mixing ratios of lactide and glycolide were 65:35, 75:25, 85:15, 75:25, and 75:25, respectively. In Comparative Example 1, a PET film (Fancylobby Corp.) was used. The optical properties of the films manufactured in the Examples and Comparative Examples were measured, and the results are shown in Table 1.

[0067] [Evaluation of Optical Performance]

[0068] (1) Transmittance (TT) value

[0069] TT was measured using a spectro-haze meter (TC-H3DPK-MKII).

[0070] (2) Haze

[0071] The haze was measured using a spectroscopic haze meter (TC-H3DPK-MKII).

[0...

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Abstract

Provided is a polyalkylene carbonate blend composition containing: aliphatic polycarbonate obtained by reacting carbon dioxide with one or at least two different kinds of epoxide compounds selected from a group consisting of (C2-C10)alkylene oxide substituted or unsubstituted with halogen or alkoxy, (C4-C20)cycloalkylene oxide substituted or unsubstituted with halogen or alkoxy, and (C8-C20)styrene oxide substituted or unsubstituted with halogen, alkoxy, alkyl, or aryl; and poly(D,L-lactide-co-glycolide) (PLGA).

Description

Technical field [0001] The present invention relates to a transparent blend composition containing a heterogeneous resin of aliphatic polycarbonate prepared by copolymerization of carbon dioxide and at least one epoxy compound and its use. Background technique [0002] In recent years, as a countermeasure against global warming, progress has been made in the industrialization of aliphatic polycarbonate in order to reduce the production of carbon dioxide. Aliphatic polycarbonate essentially has excellent processability for processing into soft rubber-phase plastics and easily controllable degradation properties, making aliphatic polycarbonate mainly studied as a biodegradable polymer. However, aliphatic polycarbonate has a low glass transition temperature (Tg) and is easily degraded at about 200°C, so that aliphatic polycarbonate has lower heat resistance. In addition, since aliphatic polycarbonate has a low elastic modulus in terms of mechanical properties and may be easily brok...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/04C08L31/04C08G64/32
CPCC08L69/00C08L67/04C08L2205/03C08L2201/10C08L31/04C08G64/32
Inventor 洪承权朴载煐丁光镇玉明岸
Owner SK INNOVATION CO LTD