실험목적
고분자 중합 공정의 개념을 이해하고 Pyrrole과 MMA를 이용한 중합을 통해 에멀젼 중합의
원리를 이해한다.
Iodine 양의 따른 전도성 고분자의 전도도의 차이를 확인하고 전도성 고분자에 대한 전체적인 이해와 원리를 알아본다.
전도성 고분자
전도성 고분자는 고분자의 본래 특성인
1. Objective 1)
PVA(poly(vinyl alcohol)) is prepared by hydrolysis of PVAc(poly(vinyl acetate)), which is synthesized by emulsion polymerization of vinyl acetate.
2. Theory
1) Monomer 7)
A monomer is an atom or a small molecule that may bind chemically to other monomers to form a polymer. The term "monomeric protein" may also be used to describe one of the proteins making up a multiprote
What is LED?
Light Emission Diode
Using P-N Junction
Wave length is defined
by Element’s Band Gap
Compound Red, Green, Blue
↓
Express Color!(white…)
Core : 2~10 nm
- Ⅱ-Ⅳ element (CdSe, CdTe, Cds)
Shell
- metallic molecular plating(ZnS, ZnSe)
Polymer Coating
- To disperse in the aqueous solution
2.2) To toughen thermoplastic polymers
To toughen thermoplastic polymers
↓
“Novel” polyolefin elastomer developed.
Copolymer of ethylene and I-octene
-Faster mixing
Better dispersion
2.2) To toughen thermoplastic polymers
EWF method
Essential work of fracture method
두께가 얇은 소재의 재료물성을 평가하는 방법
simplicity of the experimental process
Fermentation process of cheonggukjan
Soybeans 10 to 20 hours in the hot water
and put the litter
↓
After cooling, place a warm place until 60 ℃
↓
Bacillus bacteria causes fermentation by breeding
⇛ Composition of soybeans becomes changed by
Bacillus subtilis(natto), Bacillus licheniformis,
Bacillus megaterium
Changing of ingredient - PH
By Bacillus subtilis p
polymer matrix, one would expect to improve the heat performance of resulting nanocomposites. However, the effective thermal conductivity of carbon-based nanocomposites is strongly influenced by the Kapitza interfacial resistance.
In this study, a comparison between carbon nanotubes and graphene sheet nanocomposites that takes into account dispersion patterns of the nanoinclusions and the Kapi
1] bioethanol process
① pretreatment of raw material
To increase the effectiveness of fibrin degradation, pretreatment is necessary. The purpose of pretreatment improves the efficiency of the reaction (hydrolysis) by converting cellulose and its chemical composition and physical form and especially improves the accessibility of the enzyme.
[Figure 2] Pretreatment process
composite시료 (각각 PVDF/Clay 1%, 3%, 5%)의 XRD 결과이다.
순수 PVDF시료에서 2θ가 각각 17.7°, 20.0°, 26.7°에서 관측된 3개의 Peak는 α형 결정을 나타내는 것으로 알려져 있다.
PVDF/Clay composite 시료에서 2θ가 18.4°에서 관측된 Peak는 α형 결정을 나타내는 것으로 알려졌고, 20.2°에서 관측된 Peak는 β형 결정을 나타
polymer of o-quinone is not created, so that no color change does not happen. In the study, sulfite solution, what happens if you put lemon in place of a question was raised, and threw in a lemon and had no response when the same will not happen. Containing a lot of lemon ascorbic acid (vitamin C) is o-quinone and the oxidation reduction reaction, causing ・ himself as the dehydro-ascorbic
Ⅰ. 백두산의 지구화학적 특성
백두산 화산은 현무암 용암대지와 순상화산체를 하부로 하여, 그 상부에는 칼데라를 가지는 성층화산추로 구성되는 높이 2750 m의 복합화산체(composite volcano)이다. 백두산 일대의 신생대 화산암류는 그 분포면적이 18350 ㎢에 달하며, 하부는 감람석 현무암과 상부는 알칼리