Sulfur Dioxide(SO2)
The release of SO2 to the atmosphere is the primary cause of acid rain in the world.
Fossil fuel combustion at electric power-generating plants accounts for about70% of
the emissions.
Coal, Oil, and all other fossil fuels naturally
contain some sulfur.
Volcanic eruptions are another more localized natural source of SO2
SO2 + OH. HSO3.
HS
hydroxyl groups
· Esterified with a fatty acid → monoglyceride
Di-and tri-glyceride
· Produced by heating oils or fats with an excess glycerol
· Generally produced by Inter-esterification method
· widely used in bakery and dairy products, margarine
· Monoglycerides + functional group = monoglyceride derivative
· Glycerin fatty acid ester produced by inter-este
2. 이론적 분석(디자인)
셀룰로오스의 구조
Figure 1
Cellulose는 생분해성 천연 고분자다. Cellulose의 분자식은 (C6H1005)n이며 Figure. 1 같은 선형 구조를 갖고 있다. Cellulose에는 hydroxyl기(-OH)가 많기 때문에 고분자 사이에 수소결합이 많다. 고분자들이 서로 강하게 결합한 만큼 cellulose의 결정도가 높다.
1. 정의 및 이론적 근거
치석제거술과 치근활택술의 정의
미국 치주학회 용어집 (1986)
Scaling : instrumentation of the crown and root surfaces of the teeth to remove plaque, calculus, and stains from these surfaces
Root planing : a definitive treatment procedure to remove cementum or surface dentin that is rough, impregnated with calculus, or contaminated with toxin
Significantly higher surface area and much narrower pore size distribution in the mesopore region
A large amount of amine-type CO2 capturing agent into its mesopores in a well dispersed manner
Synthesis of MA
PEI impregnation on MA
Amine grafting on MCM-41
Characterization of the materials prepared
CO2 adsorption-desorption measurement
Al(i-PrO)3 (41.68g)+ Alcohol solvent