Notice, US legislation 1196

Paper pulp

– alkali resistances 1015

– fiber dimensions 1021

– molecular weight distribution 1019

Paper raw material, recycled fibers

1153–1156

Para-crystallinity, single-phase model 1258

Para-quinone methide, lignin chemistry

intermediate molecule 164–165

Parenchymal cells

– connection 46

– hardwoods 54

– rattan 50

– wood cells 49

Partial kappa numbers

– lignin fractions after washing 724

– resistant lignin fractions 724

Partial pressure, ozone 779

Particle size distribution, viscose samples

Passage ratio

– debris see debris passage ratio

– fibers see fiber passage ratio

Passing velocity 565

PDI see polydispersity index

Pectin 30

Peeling

– anhydro-sugar unit removal 175–176

– oxidative 177

– secondary 188

Peeling effect, fiber walls 1049

Peeling reactions 937

– polysaccharides 661

– pulp purification 934

– starting from reducing end-groups

660–662

– starting from stablizing end-groups 662

– stopping at 4-O-methylglucuronic acid side

Chains 179

Penetrability, wood species 135

Penetration, kraft cooking mass transfer 122,

129, 132–137

Penetration factor 134

Index

Penetration rate, effect of steam pressure

During pre-steaming 130

Pentosan

– as function of cooking temperature 463

– as function of H-factor 464

– determination 1233

Pentoses

– degradation 420

– hemicelluloses 28

– spent liquor content as function of

Viscosity 456