New developments in Pigments
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New developments in Pigments Syllabus — Unit-wise Content
The official GTU curriculum for New developments in Pigments (subject code 3173627) as prescribed for Chem. Tech. · Semester 7 divides the course into 5 units, covering 49 listed topics. The unit-wise breakdown below is read from the GTU syllabus document for this subject code, so you can check what the course actually covers before deciding which papers to attempt.
Download the official syllabus PDF (3173627)Unit 1 Stages of Pigment Dispersion
- Immersion & wetting of pigments
- penetration and separation of agglomerates
- statistical considerations of mechanical deagglomeration
- Stabilization of colloidal pigment dispersion- entropic & charged double layer mechanism of stabilization
- variables affecting stabilization
- adhesion & cohesion phenomenon associated with dispersion
- initial dispersion
- mill base & letdown compositions
- flow point curves
- instrumental analysis of fineness of dispersion
Unit 2 Dispersion mills
- High speed mixers: underlying fluid mechanics
- mill base rheology
- tank & impeller dimensions
- different impeller geometries & orientations
- power input
- Heavy duty & miscellaneous mills: sigma kneaders
- pug mixers
- planetary mixers
Unit 3 Ball mill
- Cascading principle
- speed & design of ball mill
- shape & composition of balls
- mill base composition
- power consumption
- batch & continuous operation
- Roll mills: single
- Triple roll mills
- flow of mill base through rolls
- material balance
- roll design & power inputs
Unit 4 Attritor
- mechanism of attrition
- batch & & continuous operation
- design aspects
- comparison with ball mill
- Micro bead mill: vertical open
- vertical closed & horizontal mills
- mechanism of bead milling
- effect of retention time/ flow rate
- grinding media size
- shape & composition
- pigment size and size distribution
- nature of premix processing
- mill base composition on fineness and stability of micro bead dispersion
Unit 5 Fire, explosion & health hazards
- General industrial hazards
- prime causes of fire & explosion
- safety considerations in arrangement of underground and above ground primary & secondary solvent storage tanks
- design of piping
- pumps & vessels from safety point of view
- cleaning & disposal considerations
- safety norms & regulations 07 Subject Code: 3173627 w.e.f
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