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Application of polymer and photoresist containing polymer

A polymer and photoresist technology, applied in the field of environmentally friendly materials, to avoid secondary pollution and easy sublimation

Active Publication Date: 2021-10-01
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Degradable conjugated polymers are very rare, and post-consumer conjugated polymers are more challenging to degrade and recycle than commodity plastics

Method used

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  • Application of polymer and photoresist containing polymer
  • Application of polymer and photoresist containing polymer
  • Application of polymer and photoresist containing polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Embodiment 1: Preparation of PDDA film and complete degradation in natural environment

[0064] (1) Synthesis of polymer PDDA

[0065] PDDA is synthesized by host-guest topochemical polymerization using the monomer deca-4,6-diynediic acid (DDA) as the raw material and the guest N,N'-bis(pyridin-4-ylmethyl)ethanediamide as the eutectic scaffold ( figure 1 in A).

[0066] (2) Preparation of PDDA film

[0067] Preparation of PDDA film by solution casting method: PDDA dispersed in deionized water, methanol, ethanol or other commonly used low boiling point solvents is deposited on the nylon membrane, and peeled off from the nylon membrane after drying. The PDDA film is dark red in color and exhibits a highly π-conjugated framework feature ( figure 1 in A). The PDDA thin film remains stable in the dark or under nitrogen conditions, which ensures its good stability as a functional material.

[0068] (3) PDDA is completely degraded in the natural environment

[0069] In t...

Embodiment 2

[0072] Example 2: PDDA microparticles are completely degraded in the natural environment

[0073] (1) The color and Tyndall dispersion effect of PDDA microparticle dispersion completely disappear in natural light

[0074] Of particular concern among plastic pollution are microplastics, which have the potential to enter natural ecosystems from various sources and eventually accumulate in the food chain. In order to ensure that microplastics will not accumulate during the PDDA fragmentation and degradation process, the present invention also detects the degradability of PDDA microparticles (MPs). Such as Figure 4 As shown in A, when the deionized water dispersion of PDDA MPs was exposed to outdoor natural light, the red color of the dispersion and the Tyndall scattering effect disappeared rapidly within 30 minutes; and after the same time in the dark, the dispersion The color and Tyndall effects remain unchanged. The reduction of laser light scattering intensity of PDDA MPs ...

Embodiment 3

[0077] Embodiment 3: Characterization of PDDA degradation products

[0078] After the PDDA film or solid dispersion was exposed to light in the outdoor natural environment for a week, the degraded mixed crude product was not separated and purified. After lyophilization, it was re-dissolved in deuterated water, and the pH was adjusted to 8 with NaOH. Resonance carbon spectrum, high resolution mass spectrometry, high performance liquid chromatography-mass spectrometry detection. Such as Figure 5As shown in A, there is no residual PDDA signal peak on the H NMR spectrum of the crude product, but a sharp single peak at 2.41ppm appears, which is consistent with the H NMR spectrum of small molecule succinic acid. Such as Figure 5 As shown in B, the carbon NMR spectrum of the crude product is also consistent with the carbon NMR spectrum of succinic acid, and the carbon spectrum peaks associated with the sp and sp2 carbons of PDDA also disappear accordingly, indicating that all C o...

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Abstract

The invention relates to application of a polymer and a photoresist containing the polymer, and belongs to the field of environment-friendly materials. According to the application of the polymer as a degradable material, the polymer contains a plurality of repetitive units, and the structural formula of each repetitive unit is shown as a formula I. The polymer is subjected to photo-oxidative degradation into an oligomer or dicarboxylic acid by placing the polymer in the presence of illumination and oxygen. According to the polymer, the molecular weight of the polymer can be greatly reduced, and the burden on the environment is reduced.

Description

technical field [0001] The present invention relates to the field of environment-friendly materials, more specifically, the application of a polymer and a photoresist containing the polymer, especially the application of a degradable polymer and a product containing the polymer. Background technique [0002] Polymer materials are widely used in daily life. The accumulation of used polymer materials pollutes the environment and threatens human survival and health. Among them, the polymer plastic materials synthesized from petroleum are mostly inert in the natural environment, and the natural degradation process may last for several centuries after being discarded. [0003] Currently, a class of biodegradable polymer plastics has been synthesized. Such plastics can be degraded in laboratory or industrial composting environments. However, the recycling and degradation of such plastics need to go through various processes such as collection, classification, and incineration, ...

Claims

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Application Information

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IPC IPC(8): C08F138/00G03F7/004
CPCC08F138/00G03F7/004Y02W30/62
Inventor 罗亮田斯丹乐强孟凡玲
Owner HUAZHONG UNIV OF SCI & TECH
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