Study on the Reuse of Pulp and Polyethylene Recovered from Wasted Milk Pack

2003. 1

고분자공학과

박 흥 조

Waste Milk Pack Pulp 80%polyethylene (Lamination) 20%

Chemical Reagents

Pulp Disk Refining Cleaner Screening

Pulp PE Cracker

PE

Treatment onCommission

Burning

Stuff Box

Dewatering Drying

Recycled Fine Pulp

O

CH2OH

H

H

H

OH

OH

HHO

CH2OH

HH

OH

H

OH

OH

HH

O

O

O

CH2OH

H

H

H

OH

OH

HH

O

O

CH2OH

H

H

H

OH

OH

H H

OH

n

Pulp

-Cellulose

HemicelluloseLignin

Cellulose ester: cellulose acetatecellulose sulfatecellulose nitrate

NaOH

Cellulose ether: methyl celluloseethyl cellulosecarboxymethyl cellulose (CMC)

etc: cyanoethylcellulose cellulose ether from reaction with epoxide graft compound with cellulose or its derivatives

Cellulose

NaOH solution

Na-cellulose Cellulose Derivatives

Sodiumchloroaceticchloride

Carboxymethylcellulose,Sodium Salt

(CMC)

Polymer BlendGraft polymerization

Hygroscopic Polymer

Food and pharmaceutical productsDyestuff printing pastePaper sizingCosmeticsBinder in enamels

HygroscopicPolymer

Uses위생재 , 농업 , 원예 , 식품 유통 , 토목 , 건축 ,화장품 , 의료용 , 도료 , 접착

Synthesis

Graft Polymerization

Cross-linked Polymerization

3-Dimension Reaction of Hygroscopic Polymer

Self Crosslinked Polymerization

* Cellulose 계 관련 고흡수성 고분자 화합물(1) Cellulose/PAA (2) CMC/ 자기가교 또는 가열불용화(3) 재생 cellulose 섬유 /Na-PAN

Waste Milk Pack

chemical reagent

diskrefiner Bau cleaner Lamot screen

16~20%sodium hydroxide

polyethylene Pulp (Na-cellulose)

MCAA

CMCPatent Subject: 카르복시메틸셀룰로오스의 제조방법Patent Applicant No.: 제 2002-0032276 호

CMC 합성 및 결과

Recycled Pulp Na-Cellulose CMC

MCAA

Carboxymethyl Cellulose, Sodium Salt

Reaction Conditionsmolar ratio : Na-cellulose:Cl-CH2COONa = 1 : 2.5reaction temp : 78~80Creaction time : 2.5hrsolvent : isopropyl alcohol : Water

Results :viscosity : 0.053 ~ 0.210 mPa·sDS : 0.45 ~ 1.20

Com

mer

cial

CM

CS

ynth

etic

CM

C

SEM Micrographs XRD Patterns

Endotherm of Synthetic SCMC

PE film

PE pellet Product

Alkali, Acid treatmentWashing

Melt IndexMFR Mean Value= 2.636 ± 5210 g/minApparent Viscosity= 7039.97 Pa·s

축산폐기물

미분해물 분해물

SCMC

PAA

SCMC, PAA 와 축산폐기물의 다기능성부여

배양

분해단백질활성도

미생물체의선정

* Blend* Coating

1. Protease 생성균주로부터 조효소액의 추출

a. Aspergillus oryzeab. Goldc. Dand. Aspergillus awamori

e. Aspergillus nigerf. macrosporusg. XP-1, XP-2 (powder)h. XL-1 (liquid)

Dan Gold

2. 추출효소반응에 의한 활성도 및 분해의 적정 pH

Future Work 축산폐기물SCMC

Water Absorbancy(g H2O/g)a) Blend

b) Coating

PAA

pH4 pH7 PH101분말 0.24 0.95 0.6132분말 0.5341 1.162 0.91

액체 0.255 0.89 0.82oryzae 0.524 1.062 0.84gold 0.542 0.885 0.835

macrosporus 0.679 0.277 0.206단 0.736 1.032 0.803

awamori 0.854 0.361 0.296blank 0.34 0.431 0.481

sample 12시간 반응후 흡광도 측정

0

0.2

0.4

0.6

0.8

1

1.2

1.4

효소명

O.D

pH4

pH7PH10