| dc.description.abstract | Increased need for adhesive in the wood processing industry require
alternative to meet the needs. Cocoa is one of natural resource that contains
lignocelluloses and potential to be alternative adhesive through liquefaction
process. This research aim to determine adhesive quality such as visible, degree
of acidity (pH), viscosity, density, solid content, gelatin time, ash content , free
formaldehyde, and crystalline degree, compare the adhesive quality of cocoa fruit
outer skin (CFOS/ KBKL) and inner skin (CFIS/ KBKD), and compare them with
SNI 06-4567-1998. Mixed cocoa fruit skin, H2SO4, technical crystal phenol,
NaOH and formalin with 90ºC temperature for 2 hours. Result of research
showed that cocoa fruit skin adhesive is phenolic group with CFOS was liquid
adhesive characteristic, brown colored, waste free, degree of acidity was 10,
viscosity was 0,8355 cps, density was 1,156, degree of solid content was 42,33%,
gelatin time was 89 minutes 37 seconds, ash content was 9,2%, free formaldehyde
was 0,8% and crystalline degree was 35,19% and CFIS characteristic was liquid,
reddish brown colored, waste free, degree of acidity was 10, viscosity was 31,202
cps, density was 1,262, degree of solid content was 44,66%, gelatin time was 73
minutes 45 seconds, ash content was 13,8%, free formaldehyde was 0,48% and
crystalline degree was 37,28%. CFIS better than CFOS because it has fit with the
standards well and also almost standard approach although not according to
standard. Cocoa fruit skin liquid adhesive quality were gotten fulfilled SNI 06-
4567-1998 enough such as appearance, degree of acidity, degree of solid content
and gelatin time. Free formaldehyde characteristic also fulfill of SNI 06-4565-
1998 was ≤2% . | en_US |
