Table 15.8 shows the FTIR bands of composite (LDPE, wheat husk with benzophe — none) where the characteristic peaks associated different components are observed. The NH stretching was assigned to 3969 and 3500 cm1 45 and the asymmetric and symmetric stretching vibrations of NH2 grouping are observed at 5964, 3472 and 3361 cm1, respectively.67 Highly intense and well defined peaks observed at 2743 and 1750 cm1 are due to the C=O stretching vibration of carbonyl group correspond to strong absorption benzophenone group.45 The NH and CH stretching modes aris­ing from amino groups appear around 5611 and 3462 cm-1. The CH2 asymmetric stretching (wheat gluten husk) corresponds to 5411, 4876 and 4319 cm-1 and scis­soring mode at 3920 cm-1.

The bands at 4564 and 784 cm-1 are due to aromatic CH bends. The aromatic CH stretching vibrations appear weak just above 4012 cm-1. The C=C and C=O vibra­tions of aromatic ring are confirmed at 3715, 1677 and 3234 cm-1. At 3394 cm-1 was assigned at OH group of materials. The C=O stretching was attributed at 3258 and 2853 cm-1 (wheat gluten husk).5 The absorbance at 1455 and 909 cm-1were observed due to methylene groups which are proportional to the relative total concentration of carbonyl groups.8 The peaks of LDPE were observed at 2914 cm1 correspond at CH2 asymmetric stretching, the CH2 deformation were assigned at 1561 and 1439 cm1 and finally the CH3 symmetric stretching at 1341 cm-1.9