Polymeric chain of one-dimensional nanoparticle and preparation method thereof

A nanoparticle and polymer chain technology, applied in the field of nanomaterial modification, can solve the problems of uneven distribution of polymer linear polymer chain length, poor stability, low flexibility, etc., to achieve multi-functional integration and the development and stability of new functions. Improved performance, uniform and controllable spacing

Inactive Publication Date: 2018-02-16
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The synthetic polymer linear chain length distribution is not uniform, the flexibility is small or no flexibility, the distance between nanoparticles is small and the stability is poor, the type of nanoparticles is single, etc.

Method used

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  • Polymeric chain of one-dimensional nanoparticle and preparation method thereof
  • Polymeric chain of one-dimensional nanoparticle and preparation method thereof
  • Polymeric chain of one-dimensional nanoparticle and preparation method thereof

Examples

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preparation example Construction

[0058] The present invention also discloses a method for preparing the above one-dimensional nanoparticle polymer chain, which includes the following steps,

[0059] 1) Chemical modification of the surface of nanoparticle A: Graft polymer P on the surface of nanoparticle A, control the number and length of polymer chain segments, and introduce active functional groups -N at the end of the polymer 3 , to obtain nanoparticles A-P-N with surface-grafted terminal azido-based polymers 3 .

[0060] This step 1) specifically includes three small steps, specifically:

[0061] 1-1) Immobilized ATRP initiator: the powder of nanoparticle A is vacuum-dried at 60-90°C, ground, added with a solvent and quickly sheared to disperse to obtain a suspension of nanoparticle A, then add triethylamine and 2- Bromoisobutyryl bromide, ultrasonic dispersion treatment, sealed tube reaction, first stirred and reacted at 0-3°C for 24-36 hours, continued to stir and reacted at 20-25°C for 0-12 hours, th...

Embodiment 1

[0085] Titanium dioxide nanoparticles in this example, with an average particle size of 10 nm and a purity greater than 99.8%, were purchased from Nanjing Epurui Nano Materials Co., Ltd. Other reagents were purchased from Aladdin Chemical Co., Ltd., and some reagents were purified before use.

[0086] In this example, a one-dimensional nano-titanium oxide polystyrene chain shown in the following formula I-1-1 was prepared.

[0087]

[0088] Specific steps are as follows:

[0089] Step 1) Nano TiO 2 Surface graft polymerized styrene

[0090] The synthetic route of this step is shown below,

[0091]

[0092] 1-1) Nano-TiO 2 surface mounted initiator

[0093] Weigh TiO 2 Nanoparticles, vacuum dried at 80°C for 24 hours, cooled to room temperature, ground for 5 minutes with a mortar, added anhydrous tetrahydrofuran and quickly sheared and dispersed for 10 minutes to obtain TiO 2 Suspension of nanoparticles; transferred to a polymerization tube, ultrasonically disperse...

Embodiment 2

[0117] The zinc oxide nanoparticles in this example have an average particle size of 15nm and a purity greater than 99.99%, and ferric oxide nanoparticles have an average particle size of 20nm and a purity greater than 99.99%, both of which were purchased from Nanjing Epurui Nano Materials Co., Ltd. Other reagents were purchased from Aladdin Chemical Co., Ltd., and some reagents were purified before use.

[0118] As a molecule of ZnO nanoparticles, according to the calculation formula 1, the molar mass of ZnO nanoparticles is about 5.954×10 6 g / mol; a Fe 3 o 4 Nanoparticles as a molecule, according to formula 1, get Fe 3 o 4 The molar mass of nanoparticles is about 1.306×10 7 g / mol; due to the molecular weight of 2-bromoisobutyryl bromide, bromopropyne and surface graft polymerized PS, the order of magnitude is far less than 10 6 , so the molar masses of ZnO-Br nanoparticles and ZnO-PS-Br nanoparticles are both about 5.954×10 6 g / mol, Fe 3 o 4 The molar mass of -C≡CH n...

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Abstract

The invention relates to a one-dimensional nanoparticle polymer chain and a preparation method thereof. A five-step method is adopted to prepare a one-dimensional nanoparticle polymer chain containing alternating structural units shown in formula I, wherein A and B are functional nanoparticles, One of the nanoparticles of silicon dioxide, titanium dioxide, ferric oxide, zinc oxide, aluminum oxide, magnesium oxide, aluminum nitride, silicon nitride, and boron nitride; The distribution of polymer chain length is uniform and controllable, so that the spacing between nanoparticles is controllable, and at the same time, two different nanoparticles can be alternately arranged on the chain.

Description

technical field [0001] The invention belongs to the field of modification of nanometer materials, and relates to a linear hybrid chain in which nanoparticles and polymer chain segments are alternately arranged. Background technique [0002] Compared with traditional nanoparticles, one-dimensional structured nanoparticles have specific physical and chemical properties, so they have potential application value in the field of nano-devices. [0003] For the preparation of one-dimensional micro-nano structure materials, people have developed many relatively mature methods: microporous alumina template method, which can be used to deposit Fe, Co, Ni nanowires, nanodots, and metal wires can be designed by this method Magnetic nano-mosaic structures on the surface; biological template methods, such as viruses, receptors, magnetotactic bacteria, etc., can also be used to prepare magnetic one-dimensional nanostructures; colloidal particle self-assembly method, this method can also fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F292/00C08F212/08C08F8/30C08J3/24C08L51/10
Inventor 夏茹陈鹏朱辉钱家盛杨斌苗继斌曹明苏丽芬郑争志
Owner ANHUI UNIVERSITY
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