Full form of PHBV biodegradable polymer:

Question

Full form of PHBV biodegradable polymer:

1. A. Polyhydroxy butyl vaniline
2. B. Poly hydroxy butane veratric acid
3. C. Poly (3 - Hydroxy butyrate-co-3 hydroxy valerate) (Correct answer)
4. D. Poly hydroxy butyric acid veratric acid

Correct Answer

Option C — Poly (3 - Hydroxy butyrate-co-3 hydroxy valerate)

Detailed Solution & Explanation

The correct answer is Poly (3 - Hydroxy butyrate-co-3 hydroxy valerate).

Key Points

• PHBV stands for poly(3-hydroxybutyrate-co-3-hydroxyvalerate).
• It is a biodegradable copolymer belonging to the family of polyhydroxyalkanoates (PHAs).
• PHBV is produced biologically, synthesised by bacteria such as Ralstonia eutropha and Bacillus species, which accumulate it as an intracellular carbon and energy storage material when grown under nutrient-limited conditions.
• It is a copolymer of 3-hydroxybutyrate and 3-hydroxyvalerate units, and varying their ratio adjusts its flexibility and melting point, overcoming the brittleness of pure PHB.
• Because it is biodegradable and biocompatible, PHBV is used in packaging, agricultural films, and medical applications such as surgical sutures, drug delivery systems and tissue-engineering scaffolds.

Exam Tip

• group the biodegradable polymers commonly asked in exams — PHBV, PHB, PLA (polylactic acid) and nylon-2-nylon-6 — and contrast them with non-biodegradable plastics such as polythene and PVC.

प्रश्न (हिन्दी में)

PHBV बायोडिग्रेडेबल पॉलीमर का पूर्ण रूप:

1. A. पॉलीहाइड्रॉक्सी ब्यूटाइल वैनिलीन
2. B. पॉली हाइड्रॉक्सी ब्यूटेन वेराट्रिक एसिड
3. C. पॉली (3 - हाइड्रॉक्सी ब्यूटाइरेट - co-3 हाइड्रॉक्सी वैलेरेट)
4. D. पॉली हाइड्रॉक्सी ब्यूटाइरिक एसिड वेराट्रिक एसिड