Novel triblock copolymers of poly (L-lactide)-poly (ethylene glycol)-sebacate-poly (ethylene glycol)-poly (L-lactide) were synthesized by Ring-Opening Polymerization of different ratios of L-lactide with other three pre-prepared poly (ethylene glycol)sebacate-poly (ethylene glycol) polymers, coded A, B and C which had different poly (ethyleneglycol) chain lengths. The copolymers were characterized by FTIR and 1 H NMR spectroscopy, which indicated that the reaction of ROP took place and led to producing nine triblock copolymers having new different lactide chain lengths (n = 10, 25 and 50), AL 10 , AL 25 , AL 50 ,BL 10 , BL 25 , BL 50 , CL 10 , CL 25 , and CL 50. Nine polymer networks were also prepared from copolymers with sodium alginate S 1-S 9 and finally mixed with a solution of hydroxyl ethyl cellulose to form SH 1-SH 9 .

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Novel triblock copolymers of poly(L-lactide)-poly(ethylene glycol)-sebacatepoly(ethylene glycol)-poly(L-lactide) were synthesized by Ring-Opening Polymerization (ROP) of different ratios of L-lactide with three pre-prepared poly(ethylene glycol)-sebacate-poly(ethylene glycol) polymers A, B and C have different poly(ethylene glycol) molecular weight (2000, 4000, and 10000 g/mole). The triblock copolymers were used to produce nine triblock copolymers having new different lactide chain length (n=10, 25 and 50), coded AL 10 , AL 25 , AL 50 , BL 10 , BL 25 , BL 50 , CL 10 , CL 25 , and CL 50 , respectively. Nine networks were prepared from triblock copolymers with cross-linked sodium alginate, S 1 -S 9 . All those polymer networks were loaded with 50 IU of insulin. Each component of the polymer network groups was mixed with cross-linked hydroxyl ethyl cellulose to form SH 1 -SH 9 from S 1 -S 9 fiber IPN's. These samples were coated with gelatin cross-linked with two different ratios of gluteraldehyde, 20% and 40% w/w by one layer and two layers. Insulin release study at pH 1.2 and 8.4 for 24 hours was performed. Hydrolytic degradation studies were followed at three different pH, 1.2, 7 and 8.4 for 7 weeks with 40% as maximum degradation.

Two libraries of crosslinked polymer blends were synthesized and characterized. The polymer blends were prepared from carboxymethyl cellulose, polyvinyl alcohol, and polyvinylpyrrolidone in 1:1:1 ratio using solvent casting method. Two crosslinking agents were used: glyoxal and glutaraldehyde for the first and second libraries respectively. Both crosslinking agents were used in three different ratios (10,15, and 20%). The mechanical properties of the polymer blends were tested using morphology, and swelling ratio methods for the crosslinked polymer blends only. The results confirm that the degree of crystallinity was altered during blending and crosslinking when the original polymer blend compared to itself after crosslinking. The maximum elongation εM% was found when the crosslinking agent ratio was 15%. The polymer blend D with glutaraldehyde as the crosslinking agent had the maximum elongation εM% =17.533, and about 0.565 Mpa Young modulus. While polymer blend B with glyoxal as crosslinking agent had maximum elongation εM% = 11.115, and about 0.593 Mpa Young modulus. Finally, the prepared blends are suitable for adsorption and as an excipient material in pharmaceutical industries.

This research focuses on the characteristics of polyvinyl alcohol and starch polymer blends doping with Rhodamine-B. The polymer blends were prepared using the solution cast method, which comprises 1:1(wt. /wt.).  The polymer blends of PVA and starch with had different ratios of glycerin 0, 25, 30, 35, and 40 % wt. The ratio of 30% wt of glycerin was found to be the most suitable mechanical properties by strength and elasticity. The polymer blend of 1:1 wt ratios of starch/PVA and 30% wt of glycerin were doped with different ratios of Rhoda mine-B dye 0, 1, 2, 3, 4, 5, and 6% wt and the electrical properties of doping biodegradable blends were studied. The ratio of Rhodamine-B 5% wt to the polymer blends showed high conductivity up to 1×10-3. In general, the electrical conductivity was increased with high temperature, which is similar to the behavior of semi-conductive polymers. This work focuses on the characteristics of polymer blend based on starch and polyvinyl alcohol doping with Rhodamine-B. the polymer blends were prepared using the solution cast method, which comprising 1:1(wt./wt.). ratio starch and   polyvinyl alcohol and different ratio of glycerin (0, 25, 30, 35,and 40) %. The ratio of 30% of glycerin was found to be the most suitable mechanical properties. The polymer blend of 1:1 starch/PVA and 30%of glycerin were doped with different ratio of Rhoda mine-B dye (0, 1, 2, 3, 4, 5, and 6%) and the electrical properties of doping biodegradable blends were studied. The ratio of Rhodamine-B 5% to the polymer blends was high conductivity up to 1×10-3. In general, the electrical conductivity was increased with high temperature this is similar to the behavior of semi-conductive polymers. This work focuses on the characteristics of polymer blend based on starch and polyvinyl alcohol doping with Rhodamine-B. the polymer blends were prepared using the solution cast method, which comprising 1:1(wt./wt.). ratio starch and   polyvinyl alcohol and different ratio of glycerin (0, 25, 30, 35,and 40) %. The ratio of 30% of glycerin was found to be the most suitable mechanical properties. The polymer blend of 1:1 starch/PVA and 30%of glycerin were doped with different ratio of Rhoda mine-B dye (0, 1, 2, 3, 4, 5, and 6%) and the electrical properties of doping biodegradable blends were studied. The ratio of Rhodamine-B 5% to the polymer blends was high conductivity up to 1×10-3. In general, the electrical conductivity was increased with high temperature this is similar to the behavior of semi-conductive polymers.