Treatment Lapisan Organo Silika dengan Media Plasticizer Cassava Starch untuk Preparasi Kemasan Nanokomposit Degradabel LLDPE-Cassava Starch = Treatment of Organo Silicate Layer with Plasticizer of Cassava Starch for Preparation of Nanocomposite Degradable LLDPE-Cassava Starch Packaging.

Chandra Liza; Bambang Soegijono, promotor (Universitas Indonesia, 2014)

[ABSTRAK

Pati sebagai sumber daya terbarukan mempunyai, murah,

biodegradabilitas dan kemudahan dalam modifikasi kimia, merupakan alternatif

pengganti produk plastik aplikasi kemasan sekali pakai. Namun polimer

degradabel pati memiliki kekurangan seperti sifat mekanik, transparansi dan

permeabilitas uap air yang penting dalam aplikasi kemasan.

Pembuatan degradabel nanokomposit polimer - cassava starch

menggunakan metoda melt compounding dilakukan tiga tahap dengan

menggunakan hasil optimum pada tahap sebelumnya, yaitu: pengolahan lapisan

organo silika/organo layer silicate, pembuatan masterbatch dan pembuatan

kompon hingga pembuatan kemasan film dan karakterisasi degradasi

Treatment sonikasi organo layer silicate dengan gliserol monostearat

menghasilkan organo layer silicate dengan peningkatan pada galeri antar lapisan

silikat dan dihasilkan stabilitas termal lebih tinggi dari organo layer silicate awal.

Pada pembuatan masterbatch, karakterisasi morfologi menunjukkan terbentuknya

pati termoplastik sehingga sifat alirnya menjadi lebih baik yang memudahkan

pendispersian lapisan silikat pada masterbatch 35% pati.

Kemasan film degradabel nanokomposit Linier Low Density Polyethylene

(LLDPE)-10%pati-clay mempunyai nilai transparasi pada sinar tampak lebih baik

dari LLDPE. Sifat permeabilitas uap air dan mekanik mendekati nilai LLDPE.

Spesimen kemasan mudah terdegradasi dengan nilai elongasi 5,01% pada hari ke-

14 uji degradasi Xenon-Arc.

ABSTRAK

Starch as a renewable resource has abundant supply, cheap,

biodegradability and ease of chemical modification was an alternative for plastic

product disposable packaging applications. But starch as a degradable polymers

have disadvantages such as mechanical properties, water vapor permeability and

transparency, that were important in packaging applications.

Nanocomposite polymer-starch-clay would synthesis using melt

compounding method were done in a three-stage. The optimum results were used

in the next stage. The three stages were: organo layer silicate treatment,

processing of masterbatch and processing of compound and follow by

manufacture of packaging films and characterization of degradation.

Treatment of organo layer silicate with glicerol monostearate using

sonication produces organo layer silicate with increasing inter-layer silicate

galleries, Thermal Gravimetric Analysis showed a higher thermal stability than

initial organo layer silicate. Manufacture of masterbatch showed the formation of

thermoplastic starch that the flow properties facilitated better dispersion of silicate

layer at 35% starch masterbatch with morphological characterization.

Degradable nanocomposite Linier Low Density Polyethylene (LLDPE)-

10% starch-clay packaging films has better transparency in visible light than

LLDPE. The properties of mechanical and water vapor permeability were

approaching LLDPE grades. Specimen easily degraded by elongation value of

5.01% on the 14th day of Xenon-Arc degradation test., Starch as a renewable resource has abundant supply, cheap,