This document discusses self-healing polymer technology. It describes intrinsic self-healing polymers that can heal cracks through physical or chemical interactions within the polymers themselves, and extrinsic self-healing polymers that require a pre-embedded healing agent. The document outlines advantages like improved material performance and safety, and challenges like storing the healing agent and initiator. Applications discussed include medical replacements, aerospace, military, car painting and civil constructions.

1. SELF-HEALING
POLYMER
TECHNOLOGY
Under the guidance of
Dr. A. R. Chavan
by
Sayali Chaudhary
3rd year Chemical Engineering

2. Contents
1. Introduction
2. Types of self-healing materials
3. Self-Healing man-made structures
4. Classification
5. Intrinsic Self-healing polymers
6. Extrinsic Self-healing polymers
7. Advantages
8. Challenges
9. Applications

3. Introduction
 Damage induced by factors such as
mechanical, chemical, thermal, UV radiation
 Need for improvement in material performance
 Bioinspired material systems

4. Types of Self-healing materials
1. Plastics/Polymers
2. Paints/Coatings
3. Metals
4. Ceramic/Concrete

5. Self-Healing man-made
structures
 A resin & a hardener :
depends on the extent of their mixing
 A resin & a catalyst :
chemical reactions spread at the damaged
site

6. Classification
 Intrinsic Self-Healing polymers :
able to heal cracks by the polymers
themselves.
 Extrinsic Self-Healing polymers :
healing agent has to be pre embedded

7. Intrinsic Self-Healing Polymers
 Two modes are :
1) Physical interactions : based on surface
rearrangements and crack healing.
2) Chemical interactions : based on structural
changes in atoms or molecules and
nanoscopic repairing.

8. Extrinsic Self-Healing Polymers
 Healing loaded pipelines
1) Hollow glass fibers or glass tubes
2) Three dimensional micro-vascular
network
 Healing loaded microcapsules

9. Advantages
 Improving product safety
 Improved stiffness
 Reduced waste disposal
 Building sustainable society

10. Challenges
 Storage of healing agent and initiator
 Initiation of healing
 Stability of healing agent

11. Applications
 Low-cost sensitive applications
1) Medical replacements
2) Aerospace
3) Military
 High-cost sensitive applications
1) Car painting
2) Civil constructions

12. Thank you…