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Amphipathic block copolymer containing polyisobutylene and polyanion and preparation thereof

A polyisobutylene block and amphiphilic block technology is applied in the field of amphiphilic block copolymers and their preparation, and can solve the problems of inability to popularize heterogeneous systems and lack of hydrophilic-lipophilic amphiphilicity.

Inactive Publication Date: 2013-04-17
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] However, according to our research, there are very few research reports on amphiphilic block copolymers containing polyisobutylene and polyanions and their preparation in the above-mentioned technologies, and most of the reported block copolymers containing polyisobutylene are hydrophobic. , does not have hydrophilic-lipophilic amphiphilicity, and still cannot be extended to heterogeneous systems, so it has certain limitations

Method used

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  • Amphipathic block copolymer containing polyisobutylene and polyanion and preparation thereof
  • Amphipathic block copolymer containing polyisobutylene and polyanion and preparation thereof
  • Amphipathic block copolymer containing polyisobutylene and polyanion and preparation thereof

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Embodiment 1

[0076] Embodiment 1: PIB-b-PtBMA 53 preparation method

[0077] (1) Preparation of polyisobutylene PIB-OH (HTPIB) containing hydroxyl group (-OH) at the end: under the condition of -5~0℃ ice-water bath, with anhydrous tetrahydrofuran as solvent, add a certain amount of substance into the three-necked flask Sodium borohydride (NaBH 4 ). Boron trifluoride-diethyl ether [(C 2 h 5 O) 2 ·BF 3 ] The solution was reacted for 1.5 hours; then a highly active polyisobutylene (HRPIB) solution dissolved in anhydrous tetrahydrofuran was added dropwise and reacted for 20 hours. Add NaOH solution dropwise, adjust the pH of the system to about 12, slowly add 30% H 2 o 2 solution, reacted for 7 hours. The organic layer was obtained by extraction with ether, and was washed with anhydrous magnesium sulfate (MgSO 4 ) after drying and rotary evaporation to remove the solvent, and the resulting product was dried in a vacuum oven at room temperature for 24 hours to obtain polyisobutylene P...

Embodiment 2

[0087] Embodiment 2: PIB-b-PtBMA 36 preparation method

[0088] (1) Preparation of polyisobutylene PIB-OH (HTPIB) containing hydroxyl group (-OH) at the end: same as Example 1.

[0089] (2) Preparation of KH: same as Example 1.

[0090] (3) Preparation of macroinitiator: same as embodiment one.

[0091] (4) Polymerization reaction: then move the reaction bottle into a constant temperature oil bath at 25°C, add monomer tert-butyl methacrylate (tBMA) with a dry syringe, and the molar ratio to the macromolecular initiator is 40:1, and the reaction 1.0 ~ 1.5h, and finally terminate the reaction with dry methanol. After the reaction, the polymer was removed by rotary evaporation under the condition of 30-40°C, followed by precipitation and purification with cold methanol, repeated three times, and finally dried in a vacuum oven at 40-50°C to constant weight. The desired product was obtained in greater than 98% yield as measured.

[0092] The molecular weight and the molecular ...

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Abstract

The invention belongs to the field of organic high molecular compounds, and discloses an amphipathic block copolymer containing polyisobutylene and polyanion and a preparation method thereof. A chemical formula of the amphipathic block copolymer is shown in the specification; and in the formula, x is equal to 18-60, y is equal to 10-120, and M<+> represents K<+> or Na<+> ion. The invention provides an amphipathic copolymer simultaneously containing hydrophobic polyisobutylene segment and hydrophilic polyanion segment, so that the application range of the block copolymer containing the polyisobutylene is expanded, and the copolymer can be applied to a heterogeneous system. The method has simple synthesis steps; the defect that the conventional anionic polymerization reaction is required tobe performed under severe conditions of extremely low temperature, high vacuum and the like is overcome; and the method is easy to control, can be performed at room temperature, and has the advantages of high reaction activity, high reaction speed, conversion rate of close to 100 percent, controllable molecular weight, pure product and nearly no need of a post-treatment process.

Description

technical field [0001] The invention belongs to the field of organic macromolecular compounds, and relates to an amphiphilic block copolymer containing polyisobutylene and polyanion and its preparation. Background technique [0002] Polyolefin materials include polyethylene (PE), polypropylene (PP), poly-1-butene, polyisobutylene, poly-4-methyl-1-pentene, ethylene-propylene rubber (EPR), ethylene-propylene-diene rubber (EPDM) ), etc., have the characteristics of high performance / price ratio, good mechanical properties, stable thermal properties, wide range of crystallinity modulation, excellent processing performance, good safety and stability, and can be recycled and reused. However, the inherent non-polarity and inertness of polyolefin make it poor in printing and dyeing, adhesiveness and compatibility with other materials. Dow Chemical Company has developed a new olefin block copolymer (OBCs) through a breakthrough in catalytic technology, namely ethylene-octene block co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F293/00C08F210/10C08F220/18C08F110/10C08F8/44C08F8/12C08F8/06
Inventor 倪沛红王怀超张明祖周明星朱秀林
Owner SUZHOU UNIV
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