Latex after, coagulum formed

Four types of coagulum are collected in the field, namely cup lump, tree lace, earth scrap and smallholders lump. Cup lump is the coagulated material found in the collection cup formed from residual latex after the latex was collected from a previous tapping. It is a cleaner material than the other three. Tree lace is the coagulum strip that the tapper peels off from the previous cut before making a new cut. It is often contaminated by manganese from the bark and... 

Latex continues to drip after the initial collection and coagulates naturally in the cup to form cup lump. Coagulum which forms as a film of latex on the tapped cut, called tree lace, or from latex that has dripped onto the ground, called earth scrap, is collected the next day along with the cup lump. Some smallholders may not collect the latex at all, but allow it to coagulate in the cup and collect it as cup lump. AH these methods produce mbber known as field coagulum. 

The polymer in the droplet, of course, could not diffuse and therefore formed a residual particle. The original droplets of 1-lOym diameter would be expected to have diameters of 0.3-0.8ym after all of their monomer had diffused away. Thus the hard, glassy coagulum comprises flocculated residual polymer particles from the monomer droplets together with flocculated latex particles of the main dispersion. 

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