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This work aims some challenges in the manufacturing of flexible substrates which will be used in solar cells as a substrate. Poly(imide siloxane) block copolymers were produced with the same bis(aminopropyl) polydimethylsiloxane (APPS). The polyimide hard blocks were composed by using 4,4′-oxydianiline (ODA) and benzofenon-3,3,4,4-tetrakarboksilik dianhydride (BTDA). Besides, the polysiloxane soft blocks were derived by using APPS and BTDA. APPS and BTDA formed the polysiloxane soft block in the structure. The length of polysiloxane soft block increased with increase in the length of polyimide hard block. Hence, it was possible to obtain copolymer structure and the changes in physical properties of the copolymers. These copolymers were characterized by using FT-IR analysis to evaluate the structure of flexible substrates.

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The novel research on organic polymer chemistry and physical organic chemistry involve poly(imide) siloxane on advanced and emerging technologies in radiation therapy. The poly(imide siloxane) block copolymers were synthesized at different production conditions for the use of biodegradable and biocompatible materials to use at biomedical products. These block copolymers were produced by using 4,4'-oxydianiline (ODA) and 3,3,4,4-Benzophenone-tetracarboxylic dianhydride (BTDA) to form polyimide hard block. APPS and BTDA formed the polysiloxane soft block. The polysiloxane soft blocks were increased by increasing the polyimide hard blocks. Copolymers are synthesized by adjusting the soft and hard segments. Copolymers can be obtained by holding constant hard block segments and by adjusting soft block segments. Hence, flexible poly(imide siloxane) block copolymers were derived. The samples were derived in a flexible rubber form. The prepared copolymers possess the properties of elastomers. Due to these properties, these materials have potential usage in microelectronics devices and medical devices. Poly(imide) siloxane, which can be produced with the desired form and conformed at different configurations, is important in such areas. In this research, the studies on poly(imide) siloxane have supported innovative and comprehensive radiation technology in polymer industries, experimental approaches for the innovative biomedical products. The samples were characterized as flexible rubber form and this property was detected and the creep test of poly (imide) siloxane was performed by Dynamic Mechanical Analyser (DMA).

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