Development of Spin Coating System Based on AC Universal Motor for Deposition of Polymer Films

ABSTRACTThe development of a new scratch resistant UV-curable coating system is described. The material can be applied to optical data discs by spin coating. The coating shows superior adhesion even without priming and good weathering performance especially on polycarbonate.The material is prepared from Zr(OPr)4 and 3-Methacryloxi-propyltrialkoxysilanes via sol-gel processing. Complexation of Zr(OPr)4 with methacrylic acid yields complexes which can be copolymlrized with the prehydrolyzed silane. The hydrolysis and self-condensation of the trialkoxysilanes were studied under different conditions. The consumption of water was studied by Karl-Fischer titration and the formation of oligomeric and polymeric species by GPC-measurements.

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Nanoporous Polymer Films from Immiscible Polymer Blends: Pore Size and Composition Dependence

MRS Proceedings ◽

10.1557/proc-856-bb10.13 ◽

2004 ◽

Vol 856 ◽

Author(s):

Tong Liu ◽

Rahmi Ozisik ◽

Richard W. Siegel

Keyword(s):

Pore Size ◽

Polymer Films ◽

Spin Coating ◽

Composition Dependence ◽

Processing Parameters ◽

Immiscible Polymer Blends ◽

Immiscible Blends ◽

Nanoporous Films ◽

Phase Separation Process ◽

Poly Caprolactone

ABSTRACTNanoporous polymer films have been prepared using immiscible blends of polyetherimide (PEI) and poly(caprolactone diol) (PCLD). The films were prepared by spin-coating from a common solvent — dichloromethane (DCM). To create the nanoporous films, PCLD was removed by immersing the films in acetone, which dissolves PCLD only. Field emission scanning electron microscopy was used to study the porous structure. The pore structure of the films was affected by many factors such as composition of the blend, molecular weight, and various processing parameters. The formation of nanometer size pores was mainly due to the fast phase separation process during spin-coating. The pore size and pore size distribution was found to depend on the blend composition.

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Design and implementation of a feedback programmable spin coating system

Indonesian Journal of Electrical Engineering and Computer Science ◽

10.11591/ijeecs.v17.i3.pp1516-1523 ◽

2020 ◽

Vol 17 (3) ◽

pp. 1516 ◽

Cited By ~ 1

Author(s):

Ahmed Kadhim ◽

Salah M. Swadi ◽

Ghusoon M Ali

Keyword(s):

User Interface ◽

Spin Coating ◽

High Efficiency ◽

Sol Gel ◽

Coating System ◽

Pump Speed ◽

Wide Range ◽

Spinning Speed ◽

Interactive User ◽

Interactive User Interface

In this work, a speed controlled, the programmable, low-cost, high-efficiency spin coating system is designed and implemented. The system is built from commercially available hard disk drivers DC motor, vacuum pump, speed sensor, brushless driver circuit carries Toshiba's TB6575FNG IC, PIC18F47J53 Microcontroller and using the interactive user interface to communicate with a user. Three different voltage stages and pulse width modulation techniques were used to guarantee accurate spinning speed and time. This system provides a wide range of precise and stable multi-step speeds rang of 1500 to 8,000 rpm. To evaluate the implemented system, ZnO thin films have been deposited by the sol-gel method on a glass substrate. Homogenous and uniform thickness films were obtained. The outstanding features of this system are the stability, accuracy, low energy consumption and durability, and the simplicity of adjusting multi-step spinning speed and time by using the interactive user interface.

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