Polyhedral oligomeric silsesquioxane-based amphiphilic triblock copolymer and preparation method thereof

A siloxane-based, polyhedral technology is applied in the field of amphiphilic triblock copolymers and their preparation, and achieves the effects of simple preparation, controllable design, and high product purity

Inactive Publication Date: 2013-11-20
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In summary, there is no report on the preparation of amphiphilic triblock copolymers with POSS as the hydrophobic block and 4-vinylpyridine as the hydrophilic block by reversible addition-cleavage chain transfer polymerization.

Method used

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  • Polyhedral oligomeric silsesquioxane-based amphiphilic triblock copolymer and preparation method thereof
  • Polyhedral oligomeric silsesquioxane-based amphiphilic triblock copolymer and preparation method thereof
  • Polyhedral oligomeric silsesquioxane-based amphiphilic triblock copolymer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Prepare MAiBuPOSS:CDB:AIBN=25:1:0.05 toluene solution system, the monomer concentration is 0.75mol / L, put it in a bottle, seal it, freeze and degas it three times, then put it in an oil bath at 65°C for 48h, freeze to stop the reaction. Diluted by adding a small amount of toluene, precipitated with methanol, filtered and dried to obtain a red solid, that is, polymethacryloxypropyl POSS (MCTA). The molar ratio of tert-butyl acrylate (tBA): styrene (St): polymethacryloxypropyl POSS (MCTA): initiator (AIBN) = 600: 30: 1: 0.05, the measured tBA, St, MCTA and AIBN were added to the reaction solution, sealed and then refrigerated and degassed for three times, in an oil bath at 65°C for 18 hours, refrigerated to stop the reaction, diluted with a small amount of toluene, precipitated with methanol, filtered and dried to obtain a pink solid, namely polymethylpropylene Acyloxypropyl POSS-poly(tert-butyl acrylate-styrene) (2MCTA). Molar ratio 4-vinylpyridine (4-VP): polymethacryl...

Embodiment 2

[0040] Step 1 Prepare MAiBuPOSS:CDB:AIBN=10:1:0.05 toluene solution system, and the rest are the same as in Example 1. Polymethacryloxypropyl POSS—poly(tert-butyl acrylate—styrene)—poly 4-vinylpyridine ABCP2 was obtained, wherein the mass fraction of POSS was 23.04%.

Embodiment 3

[0042] Tert-butyl acrylate (tBA) in step 2: styrene (St): polymethacryloxypropyl POSS (MCTA) = 600: 60: 1, and the rest are the same as in Example 1. Polymethacryloxypropyl POSS—poly(tert-butyl acrylate—styrene)—poly 4-vinylpyridine ABCP3 was obtained, in which the mass fraction of POSS was 41.34%.

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Abstract

The invention discloses a polyhedral oligomeric silsesquioxane-based amphiphilic triblock copolymer and a preparation method thereof, and relates to a polymeric copolymer. The polyhedral oligomeric silsesquioxane-based amphiphilic triblock copolymer consists of a first block polymethylacryl acyloxypropyl POSS (polyhedral oligomeric silsesquioxane), a second block poly (tert-butyl acrylate-styrene) and a third block poly-4-vinylpyridine. Through a reversible addition-fragmentation chain transfer (RAFT) polymerization method, the polyhedral oligomeric silsesquioxane-based amphiphilic triblock copolymer is prepared by three steps. By the preparation method, the length ratio of amphiphilic blocks is good in controllability; the preparation method is easy; the product is novel in structure; and easy acidolysis of the tert-butyl acrylate can further functionalize the amphiphilic block copolymer.

Description

technical field [0001] The invention relates to a polymer copolymer, in particular to an amphiphilic tri-block copolymer with reversible addition-fragmentation chain transfer (RAFT) polymerization and POSS as a hydrophobic block and a preparation method thereof. Background technique [0002] In the past 10 years, polyhedral oligomeric silsesquioxane (Polyhedral oligomeric silsesquioxane, POSS) as an organic-inorganic hybrid nanomaterial has attracted more and more attention. POSS has a cage structure, and its classic structural formula is (RSiO 1.5 ) n (n≥4, R=H, alkyl, aryl or organic functional group), between silicon dioxide (SiO 2 ) and silicone (R 2 SiO) n Between 1.5nm and 3nm in diameter, POSS has become one of the most useful raw materials for the research and development of organic-inorganic nano-hybrid composites due to its unique nano-size effect, low density, high heat resistance, and high oxidation resistance. . [0003] Recently, a variety of POSS-contain...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F293/00C08F130/08C08F220/18C08F212/08C08F226/06
Inventor 戴李宗杨仓杰邓远名陈珉何凯斌曾碧榕罗伟昂许一婷
Owner XIAMEN UNIV
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